-3+7b=-5b+81

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Solution for -3+7b=-5b+81 equation: 


b in (-oo:+oo)

7*b-3 = 81-5*b // - 81-5*b

7*b-(-5*b)-81-3 = 0

7*b+5*b-81-3 = 0

12*b-84 = 0 // + 84

12*b = 84 // : 12

b = 84/12

b = 7

b = 7

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