5+7b+5b=-7

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Solution for 5+7b+5b=-7 equation: 


b in (-oo:+oo)

7*b+5*b+5 = -7 // + 7

7*b+5*b+5+7 = 0

12*b+12 = 0 // - 12

12*b = -12 // : 12

b = -12/12

b = -1

b = -1

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