Solve for x
x=6
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18\times 4=x\times 12
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 18x, the least common multiple of x,18.
72=x\times 12
Multiply 18 and 4 to get 72.
x\times 12=72
Swap sides so that all variable terms are on the left hand side.
x=\frac{72}{12}
Divide both sides by 12.
x=6
Divide 72 by 12 to get 6.
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