Làm luôn nhé
\(\frac{2}{3}-\frac{1}{3}.x+\frac{1}{3}.\frac{3}{2}-\frac{1}{2}.2x-\frac{1}{2}=5\)
\(\frac{2}{3}-\frac{1}{3}x+\frac{1}{2}-x-\frac{1}{2}=5\)
\(\frac{2}{3}-\left(\frac{1}{3}x+x\right)=5\)
\(\frac{2}{3}-\frac{4}{3}x=5\)
Tới đay mk ghi đáp số luôn\(\frac{-13}{4}\)
\(\frac{2}{3}-\left(\frac{1}{3}\cdot x-\frac{1}{3}\cdot\frac{3}{2}\right)-\left(\frac{1}{2}\cdot2x+\frac{1}{2}\cdot1\right)=5\)
\(\Rightarrow\frac{2}{3}-\frac{1}{3}x+\frac{1}{2}-1x-\frac{1}{2}=5\)
\(\Rightarrow\frac{2}{3}+x\cdot\left(-\frac{1}{3}-1\right)=5\)
\(\Rightarrow x\cdot\left(-1\frac{1}{3}\right)=5-\frac{2}{3}\)
\(\Rightarrow x\cdot\left(-1\frac{1}{3}\right)=4\frac{1}{3}\)
\(\Rightarrow x=4\frac{1}{3}:-1\frac{1}{3}\)
\(\Rightarrow x=-3.25\)