Subtract 21/5 from 72/60
1st number: 1 12/60, 2nd number: 4 1/5
72/60 - 21/5 is -3/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 5 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 60 × 1 = 60,
72/60 = 72 × 1/60 × 1 = 72/60 - Likewise, for the 2nd fraction, since 5 × 12 = 60,
21/5 = 21 × 12/5 × 12 = 252/60 - Subtract the two like fractions:
72/60 - 252/60 = 72 - 252/60 = -180/60 - After reducing the fraction, the answer is -3/1
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