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3b+4=-4+4b
We move all terms to the left:
3b+4-(-4+4b)=0
We add all the numbers together, and all the variables
3b-(4b-4)+4=0
We get rid of parentheses
3b-4b+4+4=0
We add all the numbers together, and all the variables
-1b+8=0
We move all terms containing b to the left, all other terms to the right
-b=-8
b=-8/-1
b=+8
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