Subtract 15/27 from 21/5
1st number: 4 1/5, 2nd number: 15/27
21/5 - 15/27 is 164/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 27 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 5 × 27 = 135,
21/5 = 21 × 27/5 × 27 = 567/135 - Likewise, for the 2nd fraction, since 27 × 5 = 135,
15/27 = 15 × 5/27 × 5 = 75/135 - Subtract the two like fractions:
567/135 - 75/135 = 567 - 75/135 = 492/135 - After reducing the fraction, the answer is 164/45
- In mixed form: 329/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/5-15/27 21/5-30/27 21/10-15/27 21/5-15/54 63/5-15/27 21/5-45/27 21/15-15/27 21/5-15/81 21/5-75/27 21/25-15/27 21/35-15/27