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4z/9-7=4
We move all terms to the left:
4z/9-7-(4)=0
We add all the numbers together, and all the variables
4z/9-11=0
We multiply all the terms by the denominator
4z-11*9=0
We add all the numbers together, and all the variables
4z-99=0
We move all terms containing z to the left, all other terms to the right
4z=99
z=99/4
z=24+3/4
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