-12=2m-5m+9

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Solution for -12=2m-5m+9 equation: 


m in (-oo:+oo)

-12 = 2*m-(5*m)+9 // - 2*m-(5*m)+9

5*m-(2*m)-12-9 = 0

5*m-2*m-12-9 = 0

3*m-21 = 0 // + 21

3*m = 21 // : 3

m = 21/3

m = 7

m = 7

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