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2(b+-4)=-4
We move all terms to the left:
2(b+-4)-(-4)=0
We add all the numbers together, and all the variables
2(b-4)-(-4)=0
We add all the numbers together, and all the variables
2(b-4)+4=0
We multiply parentheses
2b-8+4=0
We add all the numbers together, and all the variables
2b-4=0
We move all terms containing b to the left, all other terms to the right
2b=4
b=4/2
b=2
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