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3b-12=8+6b
We move all terms to the left:
3b-12-(8+6b)=0
We add all the numbers together, and all the variables
3b-(6b+8)-12=0
We get rid of parentheses
3b-6b-8-12=0
We add all the numbers together, and all the variables
-3b-20=0
We move all terms containing b to the left, all other terms to the right
-3b=20
b=20/-3
b=-6+2/3
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