-9-4b+b=18

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Solution for -9-4b+b=18 equation: 


b in (-oo:+oo)

b-(4*b)-9 = 18 // - 18

b-(4*b)-18-9 = 0

b-4*b-18-9 = 0

-3*b-27 = 0 // + 27

-3*b = 27 // : -3

b = 27/(-3)

b = -9

b = -9

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