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(3z/10)-9=1
We move all terms to the left:
(3z/10)-9-(1)=0
We add all the numbers together, and all the variables
(+3z/10)-9-1=0
We add all the numbers together, and all the variables
(+3z/10)-10=0
We get rid of parentheses
3z/10-10=0
We multiply all the terms by the denominator
3z-10*10=0
We add all the numbers together, and all the variables
3z-100=0
We move all terms containing z to the left, all other terms to the right
3z=100
z=100/3
z=33+1/3
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