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7x/2-4=12
We move all terms to the left:
7x/2-4-(12)=0
We add all the numbers together, and all the variables
7x/2-16=0
We multiply all the terms by the denominator
7x-16*2=0
We add all the numbers together, and all the variables
7x-32=0
We move all terms containing x to the left, all other terms to the right
7x=32
x=32/7
x=4+4/7
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