It is a FALSE statement.
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-2m + 7 = m - 2 +7 +2 = m +2m 9 = 3m 3m = 9 m = 9/3 = 3 to test: -2(3) + 7 = (3) - 2 -6 + 7 = 3 - 2 1 = 1
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3m-5 = 7-21 3m = 7-21+5 3m = -9 m = -3
If: 7+3m = -29 then the value of m is -12
The equation 3m - 3m - 7 = 0, simplifies to -7 = 0 this means that the the solution is no solution, since -7 doesn't equal 0.