\(< =>-\dfrac{5}{3}x-\dfrac{7}{10}x=\dfrac{5}{6}-\dfrac{2}{3}< =>-\dfrac{71}{30}x=\dfrac{1}{6}< =>x=-\dfrac{5}{71}\)
\(\dfrac{2}{3}-\dfrac{5}{3}x=\dfrac{7}{10}x+\dfrac{5}{6}\\ \Leftrightarrow\dfrac{5}{3}x-\dfrac{7}{10}x=\dfrac{2}{3}-\dfrac{5}{6}\\ \Leftrightarrow\left(\dfrac{5}{3}-\dfrac{7}{10}\right)x=-\dfrac{1}{6}\\ \Leftrightarrow\dfrac{29}{30}x=-\dfrac{1}{6}\\ \Leftrightarrow x=-\dfrac{5}{29}\)
\(\dfrac{2}{3}-\dfrac{5}{3}x=\dfrac{7}{10}x+\dfrac{5}{6}\)
\(\dfrac{5}{3}x+\dfrac{7}{10}x=\dfrac{2}{3}-\dfrac{5}{6}\)
\(\dfrac{50+21}{30}x=\dfrac{4-5}{6}\)
\(\dfrac{71}{30}x=-\dfrac{1}{6}\)
\(x=\left(-\dfrac{1}{6}\right)\cdot\dfrac{30}{71}\)
`=>x=-5/71`
Câu trả lời:
<=> \(-\dfrac{5}{3}\) \(x-\dfrac{7}{10}\)\(x=\dfrac{5}{6}\) \(-\dfrac{2}{3}\) <=> \(\dfrac{71}{30}\) \(x=\dfrac{1}{6}\) <=> \(x=-\dfrac{5}{71}\)
