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7(z-8)=7z+42
We move all terms to the left:
7(z-8)-(7z+42)=0
We multiply parentheses
7z-(7z+42)-56=0
We get rid of parentheses
7z-7z-42-56=0
We add all the numbers together, and all the variables
-98!=0
There is no solution for this equation
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