Evaluate
-\frac{29}{60}\approx -0.483333333
Factor
-\frac{29}{60} = -0.48333333333333334
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\frac{51}{60}-\frac{80}{60}
Least common multiple of 20 and 3 is 60. Convert \frac{17}{20} and \frac{4}{3} to fractions with denominator 60.
\frac{51-80}{60}
Since \frac{51}{60} and \frac{80}{60} have the same denominator, subtract them by subtracting their numerators.
-\frac{29}{60}
Subtract 80 from 51 to get -29.
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