Subtract 10/7 from 3/15
1st number: 3/15, 2nd number: 1 3/7
3/15 - 10/7 is -43/35.
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,
3/15 = 3 × 7/15 × 7 = 21/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
10/7 = 10 × 15/7 × 15 = 150/105 - Subtract the two like fractions:
21/105 - 150/105 = 21 - 150/105 = -129/105 - After reducing the fraction, the answer is -43/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/15-10/7 3/15-20/7 3/30-10/7 3/15-10/14 9/15-10/7 3/15-30/7 3/45-10/7 3/15-10/21 3/15-50/7 3/75-10/7 3/15-10/35 21/15-10/7 3/15-70/7 3/15-10/49