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Anonymous
There is not sufficient information to answer the question. To solve for two unknown variables (d and m) you need two independent equations.
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9m + 9m + 3m + 3m = 24m
m + m + m
If: 3m = 78 Then: m = 26
3m + 15 = 45 3m = 30 m = 10
-3m = 5m+8 -3m-5m = 8 -8m = 8 m = -1