Subtract 21/20 from 2/15
1st number: 2/15, 2nd number: 1 1/20
2/15 - 21/20 is -11/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
2/15 = 2 × 4/15 × 4 = 8/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
21/20 = 21 × 3/20 × 3 = 63/60 - Subtract the two like fractions:
8/60 - 63/60 = 8 - 63/60 = -55/60 - After reducing the fraction, the answer is -11/12
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