Subtract 18/30 from 56/28
1st number: 2 0/28, 2nd number: 18/30
56/28 - 18/30 is 7/5.
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,
56/28 = 56 × 15/28 × 15 = 840/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
18/30 = 18 × 14/30 × 14 = 252/420 - Subtract the two like fractions:
840/420 - 252/420 = 840 - 252/420 = 588/420 - After reducing the fraction, the answer is 7/5
- In mixed form: 12/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/28-36/30 56/28-18/60 56/28-54/30 56/84-18/30 56/28-18/90 56/28-90/30