Question

2x/3 +3x-15/4 = 3(2x-1)/2= 7/6

 

Answer 1

Sửa đề: \(\dfrac{2x}{3}+\dfrac{3x-15}{4}-\dfrac{3\left(2x-1\right)}{2}=\dfrac{7}{6}\)

Ta có: \(\dfrac{2x}{3}+\dfrac{3x-15}{4}-\dfrac{3\left(2x-1\right)}{2}=\dfrac{7}{6}\)

\(\Leftrightarrow\dfrac{8x}{12}+\dfrac{3\left(3x-15\right)}{12}-\dfrac{18\left(2x-1\right)}{12}=\dfrac{14}{12}\)

\(\Leftrightarrow8x+9x-45-36x+18=14\)

\(\Leftrightarrow-19x-27=14\)

\(\Leftrightarrow-19x=41\)

\(\Leftrightarrow x=-\dfrac{41}{19}\)

Vậy: \(S=\left\{-\dfrac{41}{19}\right\}\)