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5.2+1.3x=13
We move all terms to the left:
5.2+1.3x-(13)=0
We add all the numbers together, and all the variables
1.3x-7.8=0
We move all terms containing x to the left, all other terms to the right
1.3x=7.8
x=7.8/1.3
x=6+-8.881784197E-16/1.3
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