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12.50+8.75x=56.25
We move all terms to the left:
12.50+8.75x-(56.25)=0
We add all the numbers together, and all the variables
8.75x-43.75=0
We move all terms containing x to the left, all other terms to the right
8.75x=43.75
x=43.75/8.75
x=5
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