7b-8+2b=91

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Solution for 7b-8+2b=91 equation: 


b in (-oo:+oo)

7*b+2*b-8 = 91 // - 91

7*b+2*b-91-8 = 0

9*b-99 = 0 // + 99

9*b = 99 // : 9

b = 99/9

b = 11

b = 11

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