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125+.18x=85+.21x
We move all terms to the left:
125+.18x-(85+.21x)=0
We add all the numbers together, and all the variables
.18x-(.21x+85)+125=0
We get rid of parentheses
.18x-.21x-85+125=0
We add all the numbers together, and all the variables
-0.03x+40=0
We move all terms containing x to the left, all other terms to the right
-0.03x=-40
x=-40/-0.03
x=1333+0.01/0.03
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