Question

1. $8 - 2a = -10$

Explanation:

Step1: Isolate the term with $a$

Subtract 8 from both sides:
$8 - 2a - 8 = -10 - 8$
$-2a = -18$

Step2: Solve for $a$

Divide both sides by $-2$:
$\frac{-2a}{-2} = \frac{-18}{-2}$

Answer:

$a = 9$