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3z/10-9=5
We move all terms to the left:
3z/10-9-(5)=0
We add all the numbers together, and all the variables
3z/10-14=0
We multiply all the terms by the denominator
3z-14*10=0
We add all the numbers together, and all the variables
3z-140=0
We move all terms containing z to the left, all other terms to the right
3z=140
z=140/3
z=46+2/3
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