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3x+1.5=12.75
We move all terms to the left:
3x+1.5-(12.75)=0
We add all the numbers together, and all the variables
3x-11.25=0
We move all terms containing x to the left, all other terms to the right
3x=11.25
x=11.25/3
x=3+2.25/3
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