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15-2.75x=28.75
We move all terms to the left:
15-2.75x-(28.75)=0
We add all the numbers together, and all the variables
-2.75x-13.75=0
We move all terms containing x to the left, all other terms to the right
-2.75x=13.75
x=13.75/-2.75
x=-5
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