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7+x/4=15
We move all terms to the left:
7+x/4-(15)=0
We add all the numbers together, and all the variables
x/4-8=0
We multiply all the terms by the denominator
x-8*4=0
We add all the numbers together, and all the variables
x-32=0
We move all terms containing x to the left, all other terms to the right
x=32
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