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2z/9-4=-7
We move all terms to the left:
2z/9-4-(-7)=0
We add all the numbers together, and all the variables
2z/9+3=0
We multiply all the terms by the denominator
2z+3*9=0
We add all the numbers together, and all the variables
2z+27=0
We move all terms containing z to the left, all other terms to the right
2z=-27
z=-27/2
z=-13+1/2
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