Subtract 18/30 from 49/28
1st number: 1 21/28, 2nd number: 18/30
49/28 - 18/30 is 23/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
49/28 = 49 × 15/28 × 15 = 735/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
18/30 = 18 × 14/30 × 14 = 252/420 - Subtract the two like fractions:
735/420 - 252/420 = 735 - 252/420 = 483/420 - After reducing the fraction, the answer is 23/20
- In mixed form: 13/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/28-18/30 49/28-36/30 49/56-18/30 49/28-18/60 49/28-54/30 49/84-18/30 49/28-18/90 49/28-90/30