91=5m+7m+7

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Solution for 91=5m+7m+7 equation: 


m in (-oo:+oo)

91 = 5*m+7*m+7 // - 5*m+7*m+7

91-(5*m)-(7*m)-7 = 0

91-5*m-7*m-7 = 0

84-12*m = 0 // - 84

-12*m = -84 // : -12

m = -84/(-12)

m = 7

m = 7

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