Subtract 42/60 from 20/15
1st number: 1 5/15, 2nd number: 42/60
20/15 - 42/60 is 19/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 60 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
20/15 = 20 × 4/15 × 4 = 80/60 - Likewise, for the 2nd fraction, since 60 × 1 = 60,
42/60 = 42 × 1/60 × 1 = 42/60 - Subtract the two like fractions:
80/60 - 42/60 = 80 - 42/60 = 38/60 - After reducing the fraction, the answer is 19/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/15-42/60 20/15-84/60 20/30-42/60 60/15-42/60 20/45-42/60 20/75-42/60