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=9+1+4+8+B+6+11+3/8
We move all terms to the left:
-(9+1+4+8+B+6+11+3/8)=0
We add all the numbers together, and all the variables
-(B+3/8+39)=0
We get rid of parentheses
-B-39-3/8=0
We multiply all the terms by the denominator
-B*8-3-39*8=0
We add all the numbers together, and all the variables
-B*8-315=0
Wy multiply elements
-8B-315=0
We move all terms containing B to the left, all other terms to the right
-8B=315
B=315/-8
B=-39+3/8
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