Subtract 20/7 from 6/15
1st number: 6/15, 2nd number: 2 6/7
6/15 - 20/7 is -86/35.
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,
6/15 = 6 × 7/15 × 7 = 42/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
20/7 = 20 × 15/7 × 15 = 300/105 - Subtract the two like fractions:
42/105 - 300/105 = 42 - 300/105 = -258/105 - After reducing the fraction, the answer is -86/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/15-20/7 6/15-40/7 6/30-20/7 6/15-20/14 18/15-20/7 6/15-60/7 6/45-20/7 6/15-20/21 30/15-20/7 6/75-20/7 6/15-20/35 42/15-20/7 6/15-20/49