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3+1.25x=6.75
We move all terms to the left:
3+1.25x-(6.75)=0
We add all the numbers together, and all the variables
1.25x-3.75=0
We move all terms containing x to the left, all other terms to the right
1.25x=3.75
x=3.75/1.25
x=3
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