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4z/7-9=2
We move all terms to the left:
4z/7-9-(2)=0
We add all the numbers together, and all the variables
4z/7-11=0
We multiply all the terms by the denominator
4z-11*7=0
We add all the numbers together, and all the variables
4z-77=0
We move all terms containing z to the left, all other terms to the right
4z=77
z=77/4
z=19+1/4
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