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60x\times \frac{1}{30}+60=3x
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 60x, the least common multiple of 30,x,20.
\frac{60}{30}x+60=3x
Multiply 60 and \frac{1}{30} to get \frac{60}{30}.
2x+60=3x
Divide 60 by 30 to get 2.
2x+60-3x=0
Subtract 3x from both sides.
-x+60=0
Combine 2x and -3x to get -x.
-x=-60
Subtract 60 from both sides. Anything subtracted from zero gives its negation.
x=60
Multiply both sides by -1.