Solve for x
x = \frac{9}{4} = 2\frac{1}{4} = 2.25
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2\times 450=x\times 400
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 2x, the least common multiple of x,2.
900=x\times 400
Multiply 2 and 450 to get 900.
x\times 400=900
Swap sides so that all variable terms are on the left hand side.
x=\frac{900}{400}
Divide both sides by 400.
x=\frac{9}{4}
Reduce the fraction \frac{900}{400} to lowest terms by extracting and canceling out 100.
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