Question

Work out the following divisions:
$10y(6y+21)÷5(2y+7)$

Answer 1

We have,

$\begin{array}{c}10y\left(6y+21\right)÷5\left(2y+7\right)\\ =\frac{10y\left(6y+21\right)}{5\left(2y+7\right)}\\ =\frac{2y\times 3\left(2y+7\right)}{\left(2y+7\right)}\\ =6y\end{array}$