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12.53+0.13x=13.28-0.08x
We move all terms to the left:
12.53+0.13x-(13.28-0.08x)=0
We add all the numbers together, and all the variables
0.13x-(-0.08x+13.28)+12.53=0
We get rid of parentheses
0.13x+0.08x-13.28+12.53=0
We add all the numbers together, and all the variables
0.21x-0.75=0
We move all terms containing x to the left, all other terms to the right
0.21x=0.75
x=0.75/0.21
x=3+0.12/0.21
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