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3=b/2+11
We move all terms to the left:
3-(b/2+11)=0
We get rid of parentheses
-b/2-11+3=0
We multiply all the terms by the denominator
-b-11*2+3*2=0
We add all the numbers together, and all the variables
-1b-16=0
We move all terms containing b to the left, all other terms to the right
-b=16
b=16/-1
b=-16
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