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461.43=210x+0.87x
We move all terms to the left:
461.43-(210x+0.87x)=0
We add all the numbers together, and all the variables
-(+210.87x)+461.43=0
We get rid of parentheses
-210.87x+461.43=0
We move all terms containing x to the left, all other terms to the right
-210.87x=-461.43
x=-461.43/-210.87
x=2+10.756097561/57.1463414634
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