Subtract 42/15 from 21/60
1st number: 21/60, 2nd number: 2 12/15
21/60 - 42/15 is -49/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 60 × 1 = 60,
21/60 = 21 × 1/60 × 1 = 21/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
42/15 = 42 × 4/15 × 4 = 168/60 - Subtract the two like fractions:
21/60 - 168/60 = 21 - 168/60 = -147/60 - After reducing the fraction, the answer is -49/20
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