9-4b+3b=20

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Solution for 9-4b+3b=20 equation: 


b in (-oo:+oo)

3*b-(4*b)+9 = 20 // - 20

3*b-(4*b)-20+9 = 0

3*b-4*b-20+9 = 0

-b-11 = 0 // + 11

-b = 11 // * -1

b = -11

b = -11

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