lên cymath.com
hoặc symbolab.com
đáp án:
\(x=\frac{47}{111}\)
\(\frac{5}{6}x+\frac{2}{3}\left(\frac{3}{5}x-\frac{6}{5}\right)=\frac{2}{9}-\frac{1}{2}\)
\(\frac{5}{6}x+\frac{2}{3}\left(\frac{3}{5}x-\frac{6}{5}\right)=\frac{4}{18}-\frac{9}{18}\)
\(\frac{5}{6}x+\frac{2}{3}\left(\frac{3}{5}x-\frac{6}{5}\right)=\)\(\frac{-5}{18}\)
\(\frac{37x}{30}-\frac{4}{5}=-\frac{5}{18}\)
\(\frac{37x}{30}\cdot \:30-\frac{4}{5}\cdot \:30=-\frac{5}{18}\cdot \:30\)
\(37x-24=-\frac{25}{3}\)
\(37x=-\frac{25}{3}+24\)
\(37x=\frac{47}{3}\)
\(x=\frac{47}{3}:37\)
\(x=\frac{47}{3\cdot37}\)
\(x=\frac{47}{111}\)
k câu trl bên dưới của mk đê
