-123=-7x-6x+7

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Solution for -123=-7x-6x+7 equation: 


x in (-oo:+oo)

-123 = 7-7*x-(6*x) // - 7-7*x-(6*x)

6*x-(-7*x)-123-7 = 0

7*x+6*x-123-7 = 0

13*x-130 = 0 // + 130

13*x = 130 // : 13

x = 130/13

x = 10

x = 10

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