Question

solve for a.
-18 ≥ -16 - a

Explanation:

Step1: Add 16 to both sides

$-18 + 16\geq -16 - a+ 16$
$-2\geq -a$

Step2: Multiply both sides by -1 and reverse the inequality sign

$(-2)\times(-1)\leq (-a)\times(-1)$
$2\leq a$

Answer:

$a\geq 2$