Question

Answer 1

\(-\dfrac{9}{7}x=-1\dfrac{1}{2}\)

\(\Leftrightarrow-\dfrac{9}{7}x=-\dfrac{3}{2}\)

\(\Leftrightarrow x=\left(-\dfrac{3}{2}\right):\left(-\dfrac{9}{7}\right)\)

\(\Leftrightarrow x=\dfrac{7}{6}\)

Answer 2

\(\dfrac{-9}{7}\cdot x=-1\dfrac{1}{2}\\ \Leftrightarrow x=\dfrac{-3}{2}\cdot\dfrac{-7}{9}\\ \Leftrightarrow x=\dfrac{7}{6}\)

Vậy x = 7/6