Question

tìm x

2/5 + 3/5 . (3x - 3,7) = -53/10

Answer 1

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

\(\frac{3}{5}.\left(3x-3,7\right)=\frac{-57}{10}\)

\(\left(3x-3,7\right)=\frac{-19}{2}\)

\(3x=-5,8\)

\(x=\frac{-29}{15}\)

Vậy \(x=\frac{-29}{15}\)

Dễ quá mà bn ko biết làm à 

Answer 2

2/3x -3/2x=5/12

x(2/3-3/2)=5/12

x=5/12. (-5/6)

x=-25/72