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63/9=z/1
We move all terms to the left:
63/9-(z/1)=0
We add all the numbers together, and all the variables
-(+z/1)+63/9=0
We add all the numbers together, and all the variables
-(+z/1)+7=0
We get rid of parentheses
-z/1+7=0
We multiply all the terms by the denominator
-z+7*1=0
We add all the numbers together, and all the variables
-1z+7=0
We move all terms containing z to the left, all other terms to the right
-z=-7
z=-7/-1
z=+7
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