-2m+7=-9

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Solution for -2m+7=-9 equation: 


m in (-oo:+oo)

7-2*m = -9 // + 9

7-2*m+9 = 0

16-2*m = 0 // - 16

-2*m = -16 // : -2

m = -16/(-2)

m = 8

m = 8

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