Answer:
m + 7n + 12
Explanation:
(4m + 7n) + (-3m + 12)
4m + 7n - 3m + 12
4m - 3m + 7n + 12
First you must combine like terms. In this case there are only one set of like terms:
4m and -3m
(4m - 3m) + 7n + 12
Hope this helped!
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