Solve for x
x=20
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60\times 15=x\times 45
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 x,60.
900=x\times 45
Multiply 60 and 15 to get 900.
x\times 45=900
Swap sides so that all variable terms are on the left hand side.
x=\frac{900}{45}
Divide both sides by 45.
x=20
Divide 900 by 45 to get 20.
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