-77=5x+7x+7

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Solution for -77=5x+7x+7 equation: 


x in (-oo:+oo)

-77 = 5*x+7*x+7 // - 5*x+7*x+7

-(5*x)-(7*x)-77-7 = 0

-5*x-7*x-77-7 = 0

-12*x-84 = 0 // + 84

-12*x = 84 // : -12

x = 84/(-12)

x = -7

x = -7

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