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Anonymous
3m + 15 = 45
3m = 30
m = 10
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3m + 11n = 3
9m + 9m + 3m + 3m = 24m
10 + 3mm = 2010 + 3x20 = 70
If 3m - 7 = 8, then m = 5
-3m = 5m+8 -3m-5m = 8 -8m = 8 m = -1