Answer 15m + 11n
Step-by-step explanation: 12+3=15 =15m + 4+7=11 = 11n = 15m + 11n
Answer:
15m + 11n
Step-by-step explanation:
(12m+4n)+(3m+7n) is the same as 15m+11n because all that happened was the combination of like terms.
12m + 3m = 15m
4n + 7n = 11n
(12m+4n)+(3m+7n) = 15m+11n
