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4z/9+2=7
We move all terms to the left:
4z/9+2-(7)=0
We add all the numbers together, and all the variables
4z/9-5=0
We multiply all the terms by the denominator
4z-5*9=0
We add all the numbers together, and all the variables
4z-45=0
We move all terms containing z to the left, all other terms to the right
4z=45
z=45/4
z=11+1/4
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