-20=-2m+5m+7

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Solution for -20=-2m+5m+7 equation: 


m in (-oo:+oo)

-20 = 5*m-2*m+7 // - 5*m-2*m+7

-(-2*m)-(5*m)-20-7 = 0

2*m-5*m-20-7 = 0

-3*m-27 = 0 // + 27

-3*m = 27 // : -3

m = 27/(-3)

m = -9

m = -9

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