Question

1. $9m - 2 + 3m - 4$

answer: _______

Explanation:

Step1: Combine like terms with $m$

$9m + 3m = 12m$

Step2: Combine constant terms

$-2 - 4 = -6$

Step3: Combine the two results

$12m + (-6)$

Answer:

$12m - 6$