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4.2x-13.04=2.5
We move all terms to the left:
4.2x-13.04-(2.5)=0
We add all the numbers together, and all the variables
4.2x-15.54=0
We move all terms containing x to the left, all other terms to the right
4.2x=15.54
x=15.54/4.2
x=3+1/1.42857142857
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