4b+3+5b=84

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Solution for 4b+3+5b=84 equation: 


b in (-oo:+oo)

4*b+5*b+3 = 84 // - 84

4*b+5*b-84+3 = 0

9*b-81 = 0 // + 81

9*b = 81 // : 9

b = 81/9

b = 9

b = 9

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