Question

EFG=5n+24 and GFH=3n+28

Answer 1

So we know that the angles EFG and GFH are linear pairs. This means that the sum of their measures is 180º:

$\text{mEFG}+\text{mGFH}=180^{\circ}$

We also know that given a certain number n these measures are given by:

$\begin{gathered} \text{mEFG}=5n+24 \\ \text{mGFH}=3n+28 \end{gathered}$

Now let's substitute these two on the first equation that I wrote:

$undefined$