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615.44=3.14x*2
We move all terms to the left:
615.44-(3.14x*2)=0
We add all the numbers together, and all the variables
-(+3.14x*2)+615.44=0
We get rid of parentheses
-3.14x*2+615.44=0
We move all terms containing x to the left, all other terms to the right
-3.14x*2=-615.44
x=-615.44/1
x=-615.44
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