\(\frac{x}{2}-\left(\frac{3x}{5}-\frac{13}{5}\right)=-\left(\frac{7}{5}+\frac{7}{10}x\right)\)
\(\frac{x}{2}-\frac{3x}{5}-\frac{13}{5}=-\frac{7}{5}-\frac{7}{10}x\)
\(\left(\frac{1}{2}-\frac{3}{5}+\frac{7}{10}\right)x=-\frac{7}{5}+\frac{13}{5}\)
\(\frac{3}{5}x=\frac{6}{5}\)
\(x=2\)
câu này cậu làm sai r