Question

$\frac{2}{3} a y^{2} - \frac{7}{6} ay^{2} =$

Answer 1

$\frac{2}{3}ay^{2} - \frac{7}{6} ay^{2} = ay^{2}( \frac{2}{3} - \frac{7}{6} ) = ay^{2}( \frac{4-7}{6}) = ay^{2}( \frac{-3}{6}) = \frac{-1}{2} ay^{2}$