Subtract 6/9 from 15/7
1st number: 2 1/7, 2nd number: 6/9
15/7 - 6/9 is 31/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 7 × 9 = 63,
15/7 = 15 × 9/7 × 9 = 135/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
6/9 = 6 × 7/9 × 7 = 42/63 - Subtract the two like fractions:
135/63 - 42/63 = 135 - 42/63 = 93/63 - After reducing the fraction, the answer is 31/21
- In mixed form: 110/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/7-6/9 15/7-12/9 15/14-6/9 15/7-6/18 45/7-6/9 15/7-18/9 15/21-6/9 15/7-6/27 75/7-6/9 15/7-30/9 15/35-6/9 15/7-6/45 15/7-42/9 15/49-6/9 15/7-6/63