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500*1.22474487139=x
We move all terms to the left:
500*1.22474487139-(x)=0
We add all the numbers together, and all the variables
-1x+612.372435695=0
We move all terms containing x to the left, all other terms to the right
-x=-612.372435695
x=-612.372435695/-1
x=612+0.372435695/1
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