Solve for z
z=\frac{1}{5}=0.2
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\frac{40}{200}=z
Divide both sides by 200.
\frac{1}{5}=z
Reduce the fraction \frac{40}{200} to lowest terms by extracting and canceling out 40.
z=\frac{1}{5}
Swap sides so that all variable terms are on the left hand side.
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