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18z+5z=3+-3+180
We move all terms to the left:
18z+5z-(3+-3+180)=0
We add all the numbers together, and all the variables
18z+5z-180=0
We add all the numbers together, and all the variables
23z-180=0
We move all terms containing z to the left, all other terms to the right
23z=180
z=180/23
z=7+19/23
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