Question

solve for k. 90 > 10 - k

Explanation:

Step1: Isolate -k

Subtract 10 from both sides.
$90 - 10>10 - k-10$
$80>-k$

Step2: Solve for k

Multiply both sides by - 1 and reverse the inequality sign.
$80\times(-1)<-k\times(-1)$
$- 80

Answer:

$k > - 80$