Question

        

mik cần gấp

Answer 1

\(a,\Rightarrow x:\dfrac{7}{3}=\dfrac{3}{56}\Rightarrow x=\dfrac{1}{8}\\ b,\Rightarrow x:\left(-\dfrac{13}{45}\right)=-\dfrac{1}{2}\\ \Rightarrow x=\dfrac{13}{90}\\ c,\Rightarrow\left[{}\begin{matrix}x=-\dfrac{3}{2}\\x=2\end{matrix}\right.\)

Answer 2

c: \(\Leftrightarrow\left[{}\begin{matrix}x=-\dfrac{3}{2}\\x=2\end{matrix}\right.\)