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x/2-7=12
We move all terms to the left:
x/2-7-(12)=0
We add all the numbers together, and all the variables
x/2-19=0
We multiply all the terms by the denominator
x-19*2=0
We add all the numbers together, and all the variables
x-38=0
We move all terms containing x to the left, all other terms to the right
x=38
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