Evaluate
-\frac{55}{72}\approx -0.763888889
Factor
-\frac{55}{72} = -0.7638888888888888
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\frac{17}{72}-\frac{72}{72}
Convert 1 to fraction \frac{72}{72}.
\frac{17-72}{72}
Since \frac{17}{72} and \frac{72}{72} have the same denominator, subtract them by subtracting their numerators.
-\frac{55}{72}
Subtract 72 from 17 to get -55.
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