Question

-3k-9=-21 zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

Answer 1

k=4

Explanation:

Answer 2

k = 4

Explanation:

Step 1: Write equation

-3k - 9 = -21

Step 2: Solve for k

1. Add 9 to both sides: -3k = -12
2. Divide both sides by -3: k = 4

Step 3: Check

Plug in k to verify it's a solution.

-3(4) - 9 = -21

-12 - 9 = -21

-21 = -21