tính :

\(\frac{2}{3}\)+\(\frac{1}{3}\)

\(\frac{3}{4}\)+\(\frac{2}{4}\)+\(\frac{1}{4}\)

\(\frac{4}{5}\)+\(\frac{3}{5}\)+\(\frac{2}{5}\)+\(\frac{1}{5}\)

\(\frac{5}{6}\)+\(\frac{4}{6}\)+\(\frac{3}{6}\)+\(\frac{2}{6}\)+\(\frac{1}{6}\)

từ các kết quả trên , hãy tính giá trị của tổng dưới đây

\(\frac{999}{1000}\)+\(\frac{998}{1000}\)+\(\frac{997}{1000}\)+ ... +\(\frac{1}{1000}\)

giúp mình nha mình cần gấp lắm , cảm ơn

bài 1: tính

\(\frac{2}{3}\)+ \(\frac{1}{3}\)  

\(\frac{3}{4}\) + \(\frac{2}{4}\)+ \(\frac{1}{4}\)

\(\frac{4}{5}\) +\(\frac{3}{5}\)+ \(\frac{2}{5}\)+ \(\frac{1}{5}\)

Từ các kết quả trên , hãy tính giá trị tổng dưới đây

\(\frac{999}{1000}\) + \(\frac{998}{1000}\)+ \(\frac{997}{1000}\)+ ... \(\frac{1}{1000}\)

bài 2: tìm các số nguyên n để số A= \(\frac{n+3}{n-2}\) nhận giá trị là số nguyên

giúp mk nha mk cần gấp, giải cụ thể chi tiết giúp mk,cảm ơn

Tìm x, biết;

a)/\(\frac{3}{2}x+\frac{1}{2}\)/\(=\)/4x-1/

b)/\(\frac{5}{4}x-\frac{7}{2}\)/\(-\)/\(\frac{5}{8}x+\frac{3}{5}\)/\(=0\)

c)/\(\frac{7}{5}x+\frac{2}{3}\)/\(=\)/\(\frac{4}{3}x-\frac{1}{4}\)/

d)/\(\frac{7}{8}x+\frac{5}{6}\)\(-\)/\(\frac{1}{2}x+5\)/\(=0\)

Tìm x, biết:

a)/\(\frac{2}{3}x+\frac{1}{2}\)/\(=\)/\(4x-1\)/

b)/\(\frac{5}{4}x-\frac{7}{2}\)/\(-\)/\(\frac{5}{8}x+\frac{3}{5}\)/\(=0\)

c)/\(\frac{7}{5}x+\frac{2}{3}\)/\(=\)/\(\frac{4}{3}x-\frac{1}{4}\)/

d)/\(\frac{7}{8}x+\frac{5}{6}\)/\(-\)/\(\frac{1}{2}x+\frac{1}{5}\)/\(=0\)

bài 1

a,\(\frac{x}{5}\)=\(\frac{2}{3}\)

b,\(\frac{x}{3}\)-\(\frac{1}{2}\)=\(\frac{1}{5}\)

c,\(\frac{x}{5}\)+\(\frac{1}{2}\)=\(\frac{6}{10}\)

d,\(\frac{x+3}{15}\)=\(\frac{1}{3}\)

e,\(\frac{x-12}{4}\)=\(\frac{1}{2}\)

h,\(\frac{4}{5}\)+x=\(\frac{2}{3}\)

i,\(\frac{3}{4}\)-x=\(\frac{1}{3}\)

k,\(\frac{-5}{6}\)-x=\(\frac{2}{3}\)

l,x-\(\frac{5}{9}\)=\(\frac{-2}{3}\)

m,\(\frac{1}{2}\)x+\(\frac{1}{2}\)=\(\frac{5}{2}\)

n,\(\frac{-2}{3}\)-\(\frac{1}{3}\)(2x-5)=\(\frac{3}{2}\)

p,(3x-1)(\(-\frac{1}{2}\)x+5)=0

q,\(3\frac{1}{3}\)+\(\frac{5}{6}\)x=\(3\frac{1}{2}\)

s,\(\frac{1}{2}\)-\(\frac{2}{3}\)x=\(\frac{7}{12}\)

t,\(\frac{3}{4}\)x+\(\frac{1}{5}\)=\(\frac{1}{6}\)

u,\(\frac{3}{8}\)-\(\frac{1}{6}\)x=\(\frac{1}{4}\)

mn ơi'-' xin hãy giúp mk với ạ>^<,mk cần rất gấp,mai nộp r ạ,mong mn giúp mk với ạ:(( huhuhu r mk tik cho:<<

Tìm x

a) 2x-\(\frac{2}{3}\)-7x = \(\frac{3}{2}\)-1

b) \(\frac{3}{2}\)x-\(\frac{2}{5}\)=\(\frac{1}{3}\)x - \(\frac{1}{4}\)

c)\(\frac{2}{3}\) - \(\frac{5}{3}\)x = \(\frac{7}{10}\)x +\(\frac{5}{6}\)

d) 2x -\(\frac{1}{4}\)= \(\frac{5}{6}\) - \(\frac{1}{2}\)x

e) 3x -\(\frac{5}{3}\)= x-\(\frac{1}{4}\)

Giúp mk với mn người ơiiii

Tìm x:

a) 5\(\frac{4}{7}\): x =13

b) \(\frac{4}{7}\)x=\(\frac{9}{8}\)-0,125

c) \(\frac{2}{3}\)x-\(\frac{1}{2}\)=\(\frac{1}{10}\)

d) \(\frac{1}{3}\)x-0,5x = -1\(\frac{1}{4}\)

e) \(\frac{-5}{6}\)- x = \(\frac{7}{12}\)+ \(\frac{-1}{3}\)

f) \(\frac{x+2}{3}\)=\(\frac{x-2}{2}\)

g) \(\frac{2}{5}\)- \(\frac{1}{5}\): x = -25%

h) (2\(\frac{4}{5}\)x - 50): \(\frac{2}{3}\)= 51

i) \(\frac{2}{3}\)x -\(\frac{1}{2}\)x =\(\frac{5}{12}\)

j) \(\frac{7}{2}\)- |2x -\(\frac{3}{4}\)| = -\(\frac{7}{4}\)

k) (x : 6\(\frac{2}{7}\)+\(\frac{3}{7}\)) :2\(\frac{1}{5}\)-\(\frac{3}{7}\)= -2

l) (x +\(\frac{1}{5}\))² +\(\frac{17}{25}\)=\(\frac{26}{25}\)

m) (x +\(\frac{1}{2}\))(\(\frac{2}{3}\)- 2x) =0

Mọi người ơi giúp mình nhanh nha.

Ai giúp mình thì mình sẽ tick cho.

bài 2 tìm x

a,\(\frac{-2}{3}.x+\frac{1}{5}=\frac{3}{10}\)

b,\(\left|x\right|-\frac{3}{4}=\frac{5}{3}\)

c,\(\frac{2}{3}.x-\frac{1}{2}=\frac{1}{10}\)

d,\(\frac{3}{5}+\frac{4}{9}:x=\frac{2}{3}\)

e,\(\left|x+75\%\right|=2\frac{1}{5}\)

i,\(\left(x+\frac{1}{2}\right).\left(\frac{2}{3}-2.x\right)=0\)

k,\(\frac{4}{7}.x-\frac{2}{3}=\frac{1}{5}\)

l,\(\frac{2}{3}.x-\frac{3}{2}.x=\frac{5}{12}\)

m,\(\left|2.x-\frac{1}{3}\right|+\frac{5}{6}=1\)

n,\(\frac{1}{3}-\frac{7}{8}.x=\frac{1}{3}\)

11,\(\frac{x+2}{5}=\frac{7}{12}-1\frac{1}{4}\)

12,\(\left(2\frac{4}{5}.x-50\right):\frac{2}{3}=51\)

13,\(\frac{2}{5}+\frac{3}{5}.\left(3.x-3,7\right)=-\frac{53}{10}\)

14,\(\frac{7}{9}:\left(2+\frac{3}{4}.x\right)+\frac{5}{9}=\frac{23}{27}\)

1 . Tính

a) \(\frac{3}{4}\)+\(\frac{9}{5}\)x\(\frac{3}{2}\)                                                                  c) (\(\frac{31}{10}\)- \(\frac{5}{2}\)) x 3 - 2

b) \(\frac{-3}{4}\)x\(\frac{1}{5}\)+\(\frac{-3}{4}\)x\(\frac{4}{5}\)                                                 d) \(\frac{-1}{3}\)x \(\frac{16}{7}\)+ \(\frac{-2}{3}\)x \(\frac{-1}{7}\)

2 . Tính tích :

P = (1 - \(\frac{1}{2}\)) x ( 1 - \(\frac{1}{3}\)) x ( 1 - \(\frac{1}{4}\)) x ..... x ( 1 - \(\frac{1}{1000}\))

BẠN NÀO TRẢ LỜI ĐẦU TIÊN MÌNH KICK CHO !!!