Solve for x
x=\frac{1}{360000}\approx 0.000002778
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0.5=180000x
Multiply 200 and 900 to get 180000.
180000x=0.5
Swap sides so that all variable terms are on the left hand side.
x=\frac{0.5}{180000}
Divide both sides by 180000.
x=\frac{5}{1800000}
Expand \frac{0.5}{180000} by multiplying both numerator and the denominator by 10.
x=\frac{1}{360000}
Reduce the fraction \frac{5}{1800000} to lowest terms by extracting and canceling out 5.
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