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200+.20x=300+.12x
We move all terms to the left:
200+.20x-(300+.12x)=0
We add all the numbers together, and all the variables
.20x-(.12x+300)+200=0
We get rid of parentheses
.20x-.12x-300+200=0
We add all the numbers together, and all the variables
0.08x-100=0
We move all terms containing x to the left, all other terms to the right
0.08x=100
x=100/0.08
x=1250
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