Question

lets check dariels solution. first, substitute -2 for x.
\\(\frac{1}{2}x + 6 = x + 10\\)
\\(\frac{1}{2}\\)(\\(square\\)) + 6 = 7 + 10

Explanation:

Step1: Substitute $x=-2$ into left term

$\frac{1}{2}(-2) + 6$

Step2: Substitute $x=-2$ into right term

$(-2) + 10$

Answer:

The first box (left side) is $-2$, the second box (right side) is $-2$