-1-2b=-6b-21

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Solution for -1-2b=-6b-21 equation: 


b in (-oo:+oo)

-(2*b)-1 = -6*b-21 // + -6*b-21

21-(2*b)-(-6*b)-1 = 0

6*b-2*b-1+21 = 0

4*b+20 = 0 // - 20

4*b = -20 // : 4

b = -20/4

b = -5

b = -5

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