Solve for x
x=12
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30\times 8=x\times 20
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 30x, the least common multiple of x,30.
240=x\times 20
Multiply 30 and 8 to get 240.
x\times 20=240
Swap sides so that all variable terms are on the left hand side.
x=\frac{240}{20}
Divide both sides by 20.
x=12
Divide 240 by 20 to get 12.
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