0
Anonymous
M=15
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If 3m - 7 = 8, then m = 5
7m + 8 =71 7m = 71 - 8 7m = 63 m = 63/7 m = 9
This cannot be true unless m is equal to 0.
2m+7-m=-402m-m+7=-40m+7=-40m=-47
m + 9 = 2 Therefore, m = 2 - 9 m = -7