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12=2b-26
We move all terms to the left:
12-(2b-26)=0
We get rid of parentheses
-2b+26+12=0
We add all the numbers together, and all the variables
-2b+38=0
We move all terms containing b to the left, all other terms to the right
-2b=-38
b=-38/-2
b=+19
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