3b-9+6b=63

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Solution for 3b-9+6b=63 equation: 


b in (-oo:+oo)

3*b+6*b-9 = 63 // - 63

3*b+6*b-63-9 = 0

9*b-72 = 0 // + 72

9*b = 72 // : 9

b = 72/9

b = 8

b = 8

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