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4z/9+3=-7
We move all terms to the left:
4z/9+3-(-7)=0
We add all the numbers together, and all the variables
4z/9+10=0
We multiply all the terms by the denominator
4z+10*9=0
We add all the numbers together, and all the variables
4z+90=0
We move all terms containing z to the left, all other terms to the right
4z=-90
z=-90/4
z=-22+1/2
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