3(-5-3m)=-78

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Solution for 3(-5-3m)=-78 equation: 


m in (-oo:+oo)

3*(-(3*m)-5) = -78 // + 78

3*(-(3*m)-5)+78 = 0

3*(-3*m-5)+78 = 0

3*(-3*m-5)+78 = 0

63-9*m = 0

63-9*m = 0

63-9*m = 0 // - 63

-9*m = -63 // : -9

m = -63/(-9)

m = 7

m = 7

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