2+b-4b=-19

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Solution for 2+b-4b=-19 equation: 


b in (-oo:+oo)

b-(4*b)+2 = -19 // + 19

b-(4*b)+2+19 = 0

b-4*b+2+19 = 0

21-3*b = 0 // - 21

-3*b = -21 // : -3

b = -21/(-3)

b = 7

b = 7

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