Question

[nguyễn bảo ngọc]

Tìm x biết :

a/ (0,4x - 2) - (1,5x +1) -(-4x-0,8)=3,6

Answer 1

[Hoàng Việt Hân]

mk cx có câu ntn

Answer 2

[Hoàng Thảo]

a)  \(\left(\frac{2}{5}x-2\right)-\left(\frac{3}{2}x+1\right)-\left(-4x-\frac{4}{5}\right)=\)\(\frac{18}{5}\)

\(\frac{2}{5}x-2-\frac{3}{2}x-1-4x+\frac{4}{5}=\frac{18}{5}\)

\(\frac{2}{5}x-\frac{3}{2}x-4x=\frac{18}{5}+2+1-\frac{4}{5}\)

\(\frac{8}{20}x-\frac{30}{20}x-\frac{80}{20}x=\frac{14}{5}+3\)

\(\frac{-51}{10}x=\frac{14}{5}+\frac{15}{5}\)

\(\frac{-51}{10}x=\frac{29}{5}\)

\(x=\frac{29}{5}.\frac{-10}{51}\)

\(x=\frac{-58}{51}\)

vậy \(x=\frac{-58}{51}\)