Subtract 21/15 from 60/18
1st number: 3 6/18, 2nd number: 1 6/15
60/18 - 21/15 is 29/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
60/18 = 60 × 5/18 × 5 = 300/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
21/15 = 21 × 6/15 × 6 = 126/90 - Subtract the two like fractions:
300/90 - 126/90 = 300 - 126/90 = 174/90 - After reducing the fraction, the answer is 29/15
- In mixed form: 114/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/18-42/15 60/36-21/15 60/18-21/30 60/18-63/15 60/54-21/15 60/18-21/45 60/90-21/15 60/18-21/75