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87.2=b/4
We move all terms to the left:
87.2-(b/4)=0
We add all the numbers together, and all the variables
-(+b/4)+87.2=0
We get rid of parentheses
-b/4+87.2=0
We multiply all the terms by the denominator
-b+(87.2)*4=0
We add all the numbers together, and all the variables
-1b+348.8=0
We move all terms containing b to the left, all other terms to the right
-b=-348.8
b=-348.8/-1
b=348+0.80000000000001/1
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