15-3(b-1)=12

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Solution for 15-3(b-1)=12 equation: 



15-3(b-1)=12

We move all terms to the left:

15-3(b-1)-(12)=0

We add all the numbers together, and all the variables

-3(b-1)+3=0

We multiply parentheses

-3b+3+3=0

We add all the numbers together, and all the variables

-3b+6=0

We move all terms containing b to the left, all other terms to the right

-3b=-6

b=-6/-3

b=+2

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