it depends on what m is.
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-2
-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
When m is 7, (6m + 3) is (42 + 3) = 45.(45)3 = 91,125
it is prime. it cannot factor out.
The answer to y m 3 2y plus 10 and m 4 5y plus 100 is m = -15, and y = 1/3.