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28(z-1)=38z
We move all terms to the left:
28(z-1)-(38z)=0
We add all the numbers together, and all the variables
-38z+28(z-1)=0
We multiply parentheses
-38z+28z-28=0
We add all the numbers together, and all the variables
-10z-28=0
We move all terms containing z to the left, all other terms to the right
-10z=28
z=28/-10
z=-2+4/5
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