3(9-b)=12

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Solution for 3(9-b)=12 equation: 


b in (-oo:+oo)

3*(9-b) = 12 // - 12

3*(9-b)-12 = 0

3*(9-b)-12 = 0

15-3*b = 0

15-3*b = 0

15-3*b = 0 // - 15

-3*b = -15 // : -3

b = -15/(-3)

b = 5

b = 5

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