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z/4+7=-128
We move all terms to the left:
z/4+7-(-128)=0
We add all the numbers together, and all the variables
z/4+135=0
We multiply all the terms by the denominator
z+135*4=0
We add all the numbers together, and all the variables
z+540=0
We move all terms containing z to the left, all other terms to the right
z=-540
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