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2z/7+9=-8
We move all terms to the left:
2z/7+9-(-8)=0
We add all the numbers together, and all the variables
2z/7+17=0
We multiply all the terms by the denominator
2z+17*7=0
We add all the numbers together, and all the variables
2z+119=0
We move all terms containing z to the left, all other terms to the right
2z=-119
z=-119/2
z=-59+1/2
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