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\(\dfrac{3}{4}\times\dfrac{8}{5}:1\dfrac{1}{6}\)
=\(\dfrac{6}{5}:\) \(\dfrac{7}{6}\)
=\(\dfrac{6}{5}\times\dfrac{6}{7}=\dfrac{36}{35}\)
2\(\dfrac{1}{3}\) x 1\(\dfrac{1}{4}\) -\(\dfrac{7}{5}\)
\(\dfrac{7}{3}\times\dfrac{5}{4}-\) \(\dfrac{7}{5}\)
\(\dfrac{35}{12}-\dfrac{7}{5}\)
\(\dfrac{175}{60}-\dfrac{84}{60}=\dfrac{91}{60}\)
4\(\dfrac{2}{3}+1\dfrac{1}{4} +2\dfrac{1}{3}+2\dfrac{3}{7}\)
(4 +2) + \(\left(\dfrac{2}{3}+\dfrac{1}{3}\right)\) +1\(\dfrac{1}{4}\) + \(2\dfrac{3}{7}\)
6 + 1 + \(\dfrac{5}{4}\) + \(\dfrac{17}{7}\)
7 + \(\dfrac{103}{28}\)
\(\dfrac{299}{28}\)
\(x+\frac{15}{7}=\frac{9}{2}\)
\(x=\frac{9}{2}-\frac{15}{7}=\frac{33}{14}\)
\(x-\frac{3}{4}=\frac{7}{2}\)
\(x=\frac{7}{2}+\frac{3}{4}=\frac{17}{4}\)
\(x.\frac{7}{8}=\frac{12}{5}\)
\(x=\frac{12}{5}:\frac{7}{8}=\frac{96}{35}\)
\(\frac{5}{6}:x=\frac{4}{3}\)
\(x=\frac{5}{6}:\frac{4}{3}=\frac{5}{8}\)
- a) x=9/2-15/7=33/14
- b) x=7/2+3/4=17/4
- c) x=12/5:7/8=61/35
- d) x=5/6:4/3=5/8
- k nha
\(\left(a\right)\frac{9}{8}+\frac{15}{32}=\frac{36}{32}+\frac{15}{32}=\frac{36+15}{32}=\frac{51}{32}\)
\(\left(b\right)4+\frac{35}{45}=\frac{4}{1}+\frac{35}{45}=\frac{180}{45}+\frac{35}{45}=\frac{180+35}{45}=\frac{43}{9}\)
\(\left(c\right)\frac{11}{4}-\frac{15}{16}=\frac{44}{16}-\frac{15}{16}=\frac{44-15}{16}=\frac{29}{16}\)
\(\left(d\right)3-\frac{13}{9}=\frac{3}{1}-\frac{13}{9}=\frac{27}{9}-\frac{13}{9}=\frac{27-13}{9}=\frac{14}{9}\)
\(\left(e\right)\frac{5}{6}-\frac{5}{8}=\frac{20}{24}-\frac{15}{24}=\frac{20-15}{24}=\frac{5}{24}\)
\(\left(g\right)\frac{196}{64}-2=\frac{196}{64}-\frac{2}{1}=\frac{196}{64}-\frac{128}{64}=\frac{196-128}{64}=\frac{17}{16}\)
Mình đảm bảo đúng ! Chúc bạn học tốt!
a) \(\frac{9}{8}+\frac{15}{32}=\frac{36}{32}+\frac{15}{32}=\frac{51}{32}\)
b) \(4+\frac{35}{45}=4+\frac{7}{9}=\frac{36}{9}+\frac{7}{9}=\frac{43}{9}\)
c)\(\frac{11}{4}+\frac{15}{16}=\frac{44}{16}+\frac{15}{16}=\frac{59}{16}\)
d )\(3-\frac{13}{9}=\frac{27}{9}-\frac{13}{9}=\frac{14}{9}\)
e ) \(\frac{5}{6}+\frac{5}{8}=\frac{40}{48}+\frac{30}{48}\)\(=\frac{70}{48}\)
Bn lớp 5 suy nghĩ đi chứ
Lớp 4 học rồi
dễ thế mà
Bài này dễ mà bn!
a) 3/4 x 2/9 = 1/6
b) 12/13 x 13/15 = 4/5
c) 1: 2/3 x 22/15 = 3/2 x 22/15
= 11/5
d) 4/9 : 2 = 2/9
BÀI DỄ THẾ , CHỈ CẦN 1 ĐẾN 2 PHÚT ĐỂ LÀM XONG BÀI ĐẤY RỒI MÀ BẠN
Cái 10 tk cảm giác chém gió nhưng thoy lm cho vậy =(
\(a,\frac{3}{4}\times\frac{2}{9}=\frac{1\times1}{2\times3}=\frac{1}{6}\)
\(b,\frac{12}{13}\times\frac{13}{15}=\frac{4\times1}{1\times5}=\frac{4}{5}\)
\(c,1:\frac{2}{3}\times\frac{22}{15}=\frac{3}{2}\times\frac{22}{15}=\frac{1\times11}{1\times5}=\frac{11}{5}\)
\(d,\frac{4}{9}:2=\frac{4}{9}\times\frac{1}{2}=\frac{2\times1}{9\times1}=\frac{2}{9}\)
Thêm nữa là bạn ko tk cho mk thì càng tốt =)
a, \(\frac{3}{4}\)x\(\frac{2}{9}=\frac{6}{36}=\frac{1}{6}\)
b,\(\frac{12}{13}\)x\(\frac{13}{15}=\frac{156}{195}=\frac{4}{5}\)
c,\(1:\frac{2}{3}\)x\(\frac{22}{15}=\frac{3}{2}\)x\(\frac{22}{15}=\frac{66}{30}=\frac{11}{5}\)
d,\(\frac{4}{9}:2=\frac{4}{18}\)
giỏi nhảy vào mà làm♡◆♥♧