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90/15=6/z
We move all terms to the left:
90/15-(6/z)=0
Domain of the equation: z)!=0We add all the numbers together, and all the variables
z!=0/1
z!=0
z∈R
-(+6/z)+90/15=0
We add all the numbers together, and all the variables
-(+6/z)+6=0
We get rid of parentheses
-6/z+6=0
We multiply all the terms by the denominator
6*z-6=0
We add all the numbers together, and all the variables
6z-6=0
We move all terms containing z to the left, all other terms to the right
6z=6
z=6/6
z=1
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