Answer:
To keep things short, the answer is:
You simplify it has:
16m + 13n + 28
Explanation:
Combine terms with like variables. Reorder them as such:
12m + 4m + 13n + 37 - 9
Simplify. Combine like terms.
(12m + 4m) + 13n + (37 - 9)
16m + 13n + 28 is your answer.
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