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12.5+1.5x=3.5x
We move all terms to the left:
12.5+1.5x-(3.5x)=0
We add all the numbers together, and all the variables
1.5x-(+3.5x)+12.5=0
We get rid of parentheses
1.5x-3.5x+12.5=0
We add all the numbers together, and all the variables
-2x+12.5=0
We move all terms containing x to the left, all other terms to the right
-2x=-12.5
x=-12.5/-2
x=6+0.5/2
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