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z/8+7=3
We move all terms to the left:
z/8+7-(3)=0
We add all the numbers together, and all the variables
z/8+4=0
We multiply all the terms by the denominator
z+4*8=0
We add all the numbers together, and all the variables
z+32=0
We move all terms containing z to the left, all other terms to the right
z=-32
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