Question

By what number should we multiply -15/28, so that the product may be -5/7?

Answer 1

$\bold{-\dfrac{15}{28}×x=-\dfrac{5}{7}}$

$\bold{x =- \dfrac{\cancel{5}}{\cancel{\purple{7}}}×-\dfrac{\cancel{\purple{28}}}{\cancel{15}}}$

$\bold{x = \dfrac{1}{1}×\dfrac{4}{3}}$

$\bold{\red{x =\dfrac{4}{3}}}$