Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
a) \(\frac{17}{9}-\frac{17}{9}:\left(\frac{7}{3}+\frac{1}{2}\right)\)
= \(\frac{17}{9}-\frac{17}{9}:\frac{17}{6}\)
= \(\frac{17}{9}-\frac{2}{3}\)
= \(\frac{11}{9}\)
b) \(\frac{4}{3}.\frac{2}{5}-\frac{3}{4}.\frac{2}{5}\)
= \(\frac{2}{5}.\left(\frac{4}{3}-\frac{3}{4}\right)\)
= \(\frac{2}{5}.\frac{7}{12}\)
= \(\frac{7}{30}\)
Mình lười làm quá, hay mình nói kết quả cho bn thôi nha
c) -6
d) 3
e) 3
g) 12
h) \(\frac{23}{18}\)
i) \(\frac{-69}{20}\)
k) \(\frac{-1}{2}\)
l) \(\frac{49}{5}\)
3) C thiếu đề
4) \(D=\frac{1}{9}-\left|\frac{-5}{23}\right|-\left(\frac{-5}{23}+\frac{1}{9}+\frac{25}{7}\right)+\frac{50}{4}-\frac{7}{30}\)
\(D=\frac{1}{9}-\frac{5}{23}+\frac{5}{23}-\frac{1}{9}-\frac{25}{7}+\frac{50}{4}-\frac{7}{30}\)
\(D=\frac{1}{9}-\frac{1}{9}-\frac{5}{23}+\frac{5}{23}+\frac{-25}{7}+\frac{50}{4}-\frac{7}{30}\)
\(D=0+0+\frac{125}{14}-\frac{7}{30}\)
\(D=\frac{913}{105}\)
\(A = {1\over2}-{3\over4}+{5\over6}-{7\over12}={6\over12}-{9\over12}+{10\over12}-{7\over12}\)\(={0\over12}=0\)
A = 5/7.(1+9/13) − 5/7.9/13
A= 5/7.(1+9/13 - 9/13)
A = 5/7.1
A = 5/7
B = 11/24 − 5/41 + 13/24 + 0.5 − 36/41
B = (11/24 + 13/24) - (5/41 + 36/41) + 0.5
B = 1 - 1 + 0.5
B = 0.5
C = −4/13.5/17 + (−12/13).4/17 + 4/13
C = 4/13.(-5/17) + (−12/13).4/17 + 4/13
C = 4/13.(-5/17 + 1) + (−12/13).4/17
C = 4/13.(−12/17) + (−12/13).4/17
C = (4.-12)/(13.17) + (−12/13).4/17
C = 4/17.(−12/13) + (−12/13).4/17
C = 4/17.(−12/13).2
C = 96/221
D = (4/3 − 3/2)2 − 2.∣−1/9∣ + (−5/18)
D = (4/3 − 3/2)2 − 2.1/9+ (−5/18)
D = -1/62 - 2/9+ (−5/18)
D = -1/12 - ( 2/9+ (−5/18) )
D = -1/12 - ( 4/18+ (−5/18) )
D = -1/12 - (-1/18)
D = -1/12 + 1/18
D = -3/36 + 2/36
D = -1/36
E = (−3/4 + 2/3):5/11 + (−1/4 + 1/3):5/11
E = (−3/4 + 2/3 + (−1/4) + 1/3):5/11
E = ((−3/4 + (−1/4)) + (2/3 + + 1/3)):5/11
E = ( - 1 + 1):5/11
E = 0:5/11
E = 0
a, 6/7 + (2/11 - 6/7) - (13/11 + 1)
= 6/7 + 2/11 - 6/7 - 13/11 - 1
= (6/7 - 6/7) - (13/11 - 2/11) - 1
= 0 - 1 - 1
= -2
A = \(\frac{1}{2}-\frac{3}{4}+\frac{5}{6}-\frac{7}{12}\)
A = \(\left(-\frac{1}{4}\right)+\frac{5}{6}-\frac{7}{12}\)
A = \(\frac{7}{12}-\frac{7}{12}\)
A = \(0\).
Mình làm câu A thôi nhé.
Chúc bạn học tốt!
Bài 1:
A = \(\frac15\) + \(\frac{3}{17}\) - \(\frac43\) + (\(\frac45\) - \(\frac{3}{17}\) + \(\frac13\)) - \(\frac17\) + (- \(\frac{14}{30}\))
A = \(\frac15\) + \(\frac{3}{17}\) - \(\frac43\) + \(\frac45\) - \(\frac{3}{17}\) + \(\frac13\) - \(\frac17\) - \(\frac{14}{30}\)
A = (\(\frac15\) + \(\frac45\)) + (\(\frac{3}{17}\) - \(\frac{3}{17}\)) - (\(\frac43-\frac13\)) - \(\frac{30}{210}\) - \(\frac{98}{210}\)
A = 1 + 0 - 1 - (\(\frac{30}{210}+\frac{98}{210}\))
A = 1 - 1 - \(\frac{228}{210}\)
A = 0 - \(\frac{128}{210}\)
A = - \(\frac{64}{105}\)
Bài 2:
B= (\(\frac58\) - \(\frac{4}{12}\) + \(\frac32\)) - (\(\frac58\) + \(\frac{9}{13}\)) - (\(\frac{-3}{2}\)) + \(\frac{7}{-15}\)
B = \(\frac58\) - \(\frac{4}{12}\) + \(\frac32\) - \(\frac58\) - \(\frac{9}{13}\) + \(\frac32\) - \(\frac{7}{15}\)
B = (\(\frac58\) - \(\frac58\)) + (\(\frac32\) + \(\frac32\)) - (\(\frac13\) + \(\frac{9}{13}\) + \(\frac{7}{15}\))
B = 0 + 3 - (\(\frac{65}{195}\) + \(\frac{135}{195}\) + \(\frac{91}{195}\))
B = 3 - (\(\frac{200}{195}\) + \(\frac{91}{195}\))
B = 3 - \(\frac{97}{65}\)
B = \(\frac{195}{65}\) - \(\frac{97}{65}\)
B = \(\frac{98}{65}\)
Bài 3:
C = \(\frac{5}{18}\) + \(\frac{8}{19}\) - \(\frac{7}{21}\) + (\(\frac{-10}{36}\) + \(\frac{11}{19}\) + \(\frac13\)) - \(\frac58\)
C = \(\frac{5}{18}\) + \(\frac{8}{19}\) - \(\frac13\) - \(\frac{5}{18}\) + \(\frac{11}{19}\) + \(\frac13\) - \(\frac58\)
C = (\(\frac{5}{18}\) - \(\frac{5}{18}\)) - (\(\frac13-\frac13\)) + (\(\frac{8}{19}\) + \(\frac{11}{19}\)) - \(\frac58\)
C = 0 - 0 + 1 - \(\frac58\)
C = 1 - \(\frac58\)
C = \(\frac88-\frac58\)
C = \(\frac38\)
Bài 4:
D = \(\frac19\) - (\(\frac{-5}{23}\)) - (\(\frac{-5}{23}\) + \(\frac19\) + \(\frac{25}{7}\)) + \(\frac{50}{14}\) - \(\frac{7}{30}\)
D = \(\frac19\) + \(\frac{5}{23}\) + \(\frac{5}{23}\) - \(\frac19\) - \(\frac{25}{7}\) + \(\frac{25}{7}\) - \(\frac{7}{30}\)
D = (\(\frac19\) - \(\frac19\)) + (\(\frac{5}{23}+\frac{5}{23}\)) - (\(\frac{25}{7}-\frac{25}{7}\)) - \(\frac{7}{30}\)
D = 0 + \(\frac{10}{23}\) - 0 - \(\frac{7}{30}\)
D = \(\frac{10}{23}\) - \(\frac{7}{30}\)
D = \(\frac{300}{690}\) - \(\frac{161}{690}\)
D = \(\frac{139}{690}\)
Bài 5:
E = \(\frac{1}{13}\) + (\(\frac{-5}{18}\) - \(\frac{1}{13}\) + \(\frac{12}{17}\)) + (\(\frac{12}{17}\) + \(\frac{5}{18}\) + \(\frac75\))
E = \(\frac{1}{13}\) - \(\frac{5}{18}\) - \(\frac{1}{13}\) + \(\frac{12}{17}\) + \(\frac{12}{17}\) + \(\frac{5}{18}\) + \(\frac75\)
E = (\(\frac{1}{13}\) - \(\frac{1}{13}\)) - (\(\frac{5}{18}\) - \(\frac{5}{18}\)) + (\(\frac{12}{17}\) + \(\frac{12}{17}\)) + \(\frac75\)
E = 0 - 0 + \(\frac{24}{17}\) + \(\frac75\)
E = \(\frac{120}{85}\) + \(\frac{119}{85}\)
E = \(\frac{239}{85}\)
Câu 6:
F = \(\frac{15}{14}\) - (\(\frac{17}{23}\) - \(\frac{80}{87}\) + \(\frac54\)) + (\(\frac{12}{17}\) - \(\frac{15}{14}\) + \(\frac14\))
F = \(\frac{15}{14}\) - \(\frac{17}{23}\) + \(\frac{80}{87}\) - \(\frac54\) + \(\frac{12}{17}\) - \(\frac{15}{14}\) + \(\frac14\)
F = (\(\frac{15}{14}\) - \(\frac{15}{14}\)) - (\(\frac54\) - \(\frac14\)) - \(\frac{17}{23}\) + \(\frac{80}{87}\) + \(\frac{12}{17}\)
F = 0 - 1 - \(\frac{17}{23}\) + \(\frac{80}{87}\) + \(\frac{12}{17}\)
F = - \(\frac{34017}{34017}\) - \(\frac{25143}{34017}\) + (\(\frac{31280}{34017}\) + \(\frac{24012}{34017}\))
F = - \(\frac{59160}{34017}\) + \(\frac{55292}{34017}\)
F = -\(\frac{3868}{34017}\)
Câu 7:
G = \(\frac{1}{25}\) - \(\frac{4}{27}\) + (\(\frac{-23}{27}\) + \(\frac{-1}{25}\) - \(\frac{5}{43}\)) + \(\frac{5}{43}\) - \(\frac47\)
G = \(\frac{1}{25}\) - \(\frac{4}{27}\) - \(\frac{23}{27}\) - \(\frac{1}{25}\) - \(\frac{5}{43}\) + \(\frac{5}{43}\) - \(\frac47\)
G = (\(\frac{1}{25}\) - \(\frac{1}{25}\)) - (\(\frac{4}{27}+\frac{23}{27}\)) - (\(\frac{5}{43}-\frac{5}{43}\)) - \(\frac47\)
G = 0 - 1 - 0 - \(\frac47\)
G = - 1 - \(\frac47\)
G = - \(\frac77-\frac47\)
G = -\(\frac{11}{7}\)
Bài 8:
H = \(\frac{4}{15}\) - \(\frac{23}{28}\) - (\(\frac{-23}{28}\) + \(\frac{-11}{15}\) - \(\frac{29}{27}\)) - \(\frac{2}{27}\)
H = \(\frac{4}{15}\) - \(\frac{23}{28}\) + \(\frac{23}{28}\) + \(\frac{11}{15}\) + \(\frac{29}{27}\) - \(\frac{2}{27}\)
H = (\(\frac{4}{15}\) + \(\frac{11}{15}\)) - (\(\frac{23}{28}\) - \(\frac{23}{28}\)) + (\(\frac{29}{27}-\frac{2}{27}\))
H = 1 - 0 + 1
H = 1 + 1
H = 2
Bài 9:
K = \(\frac{1}{16}\) - \(\frac{5}{21}\) + ( \(\frac{-1}{16}\) + \(\frac{-3}{5}\) - \(\frac{-5}{21}\)) + \(\frac{-2}{5}\) + \(\frac34\)
K = \(\frac{1}{16}\) - \(\frac{5}{21}\) - \(\frac{1}{16}\) - \(\frac35\) + \(\frac{5}{21}\) - \(\frac25\) + \(\frac34\)
K = (\(\frac{1}{16}\) - \(\frac{1}{16}\)) - (\(\frac{5}{21}\) - \(\frac{5}{21}\)) - (\(\frac35+\frac25\)) + \(\frac34\)
K = 0 - 0 - 1 + \(\frac34\)
K = - \(\frac44+\frac34\)
K = - \(\frac14\)
Câu 10:
L = \(\frac{7}{12}\) + \(\frac{15}{14}\) - (\(\frac{14}{22}\) + \(\frac{-1}{14}\) + \(\frac{5}{21}\)) - \(\frac{-5}{21}\) + \(\frac35\)
L = \(\frac{7}{12}\) + \(\frac{15}{14}\) - \(\frac{14}{22}\) + \(\frac{1}{14}\) - \(\frac{5}{21}\) + \(\frac{5}{21}\) + \(\frac35\)
L = \(\frac{7}{12}\) - \(\frac{14}{22}\) + \(\frac35\) + (\(\frac{15}{14}\) + \(\frac{1}{14}\)) - (\(\frac{5}{21}\) - \(\frac{5}{21}\))
L = \(\frac{7}{12}\) - \(\frac{14}{22}\) + \(\frac35\) + \(\frac87\) - 0
L = \(\frac{2695}{4620}\) - \(\frac{2940}{4620}\) + \(\frac{2772}{4620}\) + \(\frac{5280}{4620}\)
L =-\(\frac{245}{4620}\) + \(\frac{2772}{4620}\) + \(\frac{5280}{4620}\)
L = \(\frac{2527}{4620}\) + \(\frac{5280}{4620}\)
L = \(\frac{7807}{4620}\)