Subtract 45/49 from 21/5
1st number: 4 1/5, 2nd number: 45/49
21/5 - 45/49 is 804/245.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 49 is 245
Next, find the equivalent fraction of both fractional numbers with denominator 245 - For the 1st fraction, since 5 × 49 = 245,
21/5 = 21 × 49/5 × 49 = 1029/245 - Likewise, for the 2nd fraction, since 49 × 5 = 245,
45/49 = 45 × 5/49 × 5 = 225/245 - Subtract the two like fractions:
1029/245 - 225/245 = 1029 - 225/245 = 804/245 - In mixed form: 369/245
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/5-45/49 21/5-90/49 21/10-45/49 21/5-45/98 63/5-45/49 21/15-45/49 21/25-45/49 21/35-45/49