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3601.50+x=12.000
We move all terms to the left:
3601.50+x-(12.000)=0
We add all the numbers together, and all the variables
x+3601.50-12=0
We add all the numbers together, and all the variables
x+3589.5=0
We move all terms containing x to the left, all other terms to the right
x=-3589.5
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