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2(b-3)-4b=4
We move all terms to the left:
2(b-3)-4b-(4)=0
We add all the numbers together, and all the variables
-4b+2(b-3)-4=0
We multiply parentheses
-4b+2b-6-4=0
We add all the numbers together, and all the variables
-2b-10=0
We move all terms containing b to the left, all other terms to the right
-2b=10
b=10/-2
b=-5
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