Answer:
21
Explanation:
-10+59 = 5m = 7 + 3m
49 = 5m = 7 + 3m
49 - 7 = 5m - 3m
42 = 2m
42/2 = m
m= 21
-10+59=5m=7+3m
49=5m=7+3m
49-7=5m-3m
m=42/2
m=21
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