Subtract 21/12 from 28/60
1st number: 28/60, 2nd number: 1 9/12
28/60 - 21/12 is -77/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 60 × 1 = 60,
28/60 = 28 × 1/60 × 1 = 28/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
21/12 = 21 × 5/12 × 5 = 105/60 - Subtract the two like fractions:
28/60 - 105/60 = 28 - 105/60 = -77/60
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