\(-\left(\frac{1}{2}.x-\frac{3}{4}\right)-\left(-x+1\right)=-\frac{3}{2}\) \(\frac{3}{2}\)
<=> \(-\frac{1}{2}x+\frac{3}{4}+x-1=\frac{-3}{2}\)
<=> \(\frac{1}{2}x-\frac{1}{4}=\frac{-3}{2}\)
<=> \(\frac{1}{2}x=-\frac{5}{4}\)
<=> \(x=\frac{-5}{2}\)
\(-5.\left(2x-\frac{2}{5}\right)+\frac{1}{3}x.\left(-x+1\right)\) \(=-\frac{3}{2}\)
<=> \(-10x+2-\frac{x^2}{3}+\frac{1}{3}x\) \(=\frac{-3}{2}\)
làm nốt nha
mk phải đi học rồi
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