Question

$5m^{2} +15m^{2}$

Answer 1

Explicación paso a paso:

$$\begin{lgathered}\left(7-45\right)-\left(-49\right)\div \:7\times \left(-6\right)\\\\-38-\left(-49\right)\div \:7\times \left(-6\right)\\\\-38-42\\\\-80\end{lgathered}$$