6b+3+3b=21

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Solution for 6b+3+3b=21 equation: 


b in (-oo:+oo)

6*b+3*b+3 = 21 // - 21

6*b+3*b-21+3 = 0

9*b-18 = 0 // + 18

9*b = 18 // : 9

b = 18/9

b = 2

b = 2

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