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-1=b/4+2
We move all terms to the left:
-1-(b/4+2)=0
We get rid of parentheses
-b/4-2-1=0
We multiply all the terms by the denominator
-b-2*4-1*4=0
We add all the numbers together, and all the variables
-1b-12=0
We move all terms containing b to the left, all other terms to the right
-b=12
b=12/-1
b=-12
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