Subtract 9/7 from 56/15
1st number: 3 11/15, 2nd number: 1 2/7
56/15 - 9/7 is 257/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
56/15 = 56 × 7/15 × 7 = 392/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
9/7 = 9 × 15/7 × 15 = 135/105 - Subtract the two like fractions:
392/105 - 135/105 = 392 - 135/105 = 257/105 - In mixed form: 247/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/15-18/7 56/30-9/7 56/15-9/14 56/15-27/7 56/45-9/7 56/15-9/21 56/15-45/7 56/75-9/7 56/15-9/35 56/15-63/7 56/15-9/49