Solve for x
x=100
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100\times 72=x\times 72
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 100x, the least common multiple of x,100.
7200=x\times 72
Multiply 100 and 72 to get 7200.
x\times 72=7200
Swap sides so that all variable terms are on the left hand side.
x=\frac{7200}{72}
Divide both sides by 72.
x=100
Divide 7200 by 72 to get 100.
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