7b+7=84

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Solution for 7b+7=84 equation: 


b in (-oo:+oo)

7*b+7 = 84 // - 84

7*b-84+7 = 0

7*b-77 = 0 // + 77

7*b = 77 // : 7

b = 77/7

b = 11

b = 11

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