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64.4=b/8
We move all terms to the left:
64.4-(b/8)=0
We add all the numbers together, and all the variables
-(+b/8)+64.4=0
We get rid of parentheses
-b/8+64.4=0
We multiply all the terms by the denominator
-b+(64.4)*8=0
We add all the numbers together, and all the variables
-1b+515.2=0
We move all terms containing b to the left, all other terms to the right
-b=-515.2
b=-515.2/-1
b=515+0.20000000000005/1
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