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3x/2=9/2
We move all terms to the left:
3x/2-(9/2)=0
We add all the numbers together, and all the variables
3x/2-(+9/2)=0
We get rid of parentheses
3x/2-9/2=0
We multiply all the terms by the denominator
3x-9=0
We move all terms containing x to the left, all other terms to the right
3x=9
x=9/3
x=3
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