Question

solve for a.
20 - a ≥ 1

Explanation:

Step1: Isolate the variable term

Subtract 20 from both sides.
$20 - a-20\geq1 - 20$

Step2: Simplify the inequality

$-a\geq - 19$

Step3: Solve for a

Multiply both sides by - 1 and reverse the inequality sign.
$a\leq19$

Answer:

$a\leq19$