-4+3b+4b=80

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Solution for -4+3b+4b=80 equation: 


b in (-oo:+oo)

3*b+4*b-4 = 80 // - 80

3*b+4*b-80-4 = 0

7*b-84 = 0 // + 84

7*b = 84 // : 7

b = 84/7

b = 12

b = 12

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