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12=42/x
We move all terms to the left:
12-(42/x)=0
Domain of the equation: x)!=0We add all the numbers together, and all the variables
x!=0/1
x!=0
x∈R
-(+42/x)+12=0
We get rid of parentheses
-42/x+12=0
We multiply all the terms by the denominator
12*x-42=0
We add all the numbers together, and all the variables
12x-42=0
We move all terms containing x to the left, all other terms to the right
12x=42
x=42/12
x=3+1/2
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