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3.5x+2.5=16
We move all terms to the left:
3.5x+2.5-(16)=0
We add all the numbers together, and all the variables
3.5x-13.5=0
We move all terms containing x to the left, all other terms to the right
3.5x=13.5
x=13.5/3.5
x=3+1/1.1666666666667
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