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2=10B+13
We move all terms to the left:
2-(10B+13)=0
We get rid of parentheses
-10B-13+2=0
We add all the numbers together, and all the variables
-10B-11=0
We move all terms containing B to the left, all other terms to the right
-10B=11
B=11/-10
B=-1+1/10
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