Solve for x
x=3
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12\times 5=x\times 20
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 12x, the least common multiple of x,12.
60=x\times 20
Multiply 12 and 5 to get 60.
x\times 20=60
Swap sides so that all variable terms are on the left hand side.
x=\frac{60}{20}
Divide both sides by 20.
x=3
Divide 60 by 20 to get 3.
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