Subtract 2/30 from 21/4
1st number: 5 1/4, 2nd number: 2/30
21/4 - 2/30 is 311/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 4 × 15 = 60,
21/4 = 21 × 15/4 × 15 = 315/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
2/30 = 2 × 2/30 × 2 = 4/60 - Subtract the two like fractions:
315/60 - 4/60 = 315 - 4/60 = 311/60 - In mixed form: 511/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/4-2/30 21/4-4/30 21/8-2/30 21/4-2/60 63/4-2/30 21/4-6/30 21/12-2/30 21/4-2/90 21/4-10/30 21/20-2/30 21/4-14/30 21/28-2/30