Subtract 21/45 from 63/27
1st number: 2 9/27, 2nd number: 21/45
63/27 - 21/45 is 28/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 45 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 27 × 5 = 135,
63/27 = 63 × 5/27 × 5 = 315/135 - Likewise, for the 2nd fraction, since 45 × 3 = 135,
21/45 = 21 × 3/45 × 3 = 63/135 - Subtract the two like fractions:
315/135 - 63/135 = 315 - 63/135 = 252/135 - After reducing the fraction, the answer is 28/15
- In mixed form: 113/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/27-42/45 63/54-21/45 63/27-21/90 63/27-63/45 63/81-21/45