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(4z/9)+9=7
We move all terms to the left:
(4z/9)+9-(7)=0
We add all the numbers together, and all the variables
(+4z/9)+9-7=0
We add all the numbers together, and all the variables
(+4z/9)+2=0
We get rid of parentheses
4z/9+2=0
We multiply all the terms by the denominator
4z+2*9=0
We add all the numbers together, and all the variables
4z+18=0
We move all terms containing z to the left, all other terms to the right
4z=-18
z=-18/4
z=-4+1/2
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