Subtract 6/7 from 70/15
1st number: 4 10/15, 2nd number: 6/7
70/15 - 6/7 is 80/21.
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,
70/15 = 70 × 7/15 × 7 = 490/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
6/7 = 6 × 15/7 × 15 = 90/105 - Subtract the two like fractions:
490/105 - 90/105 = 490 - 90/105 = 400/105 - After reducing the fraction, the answer is 80/21
- In mixed form: 317/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/15-12/7 70/30-6/7 70/15-6/14 70/15-18/7 70/45-6/7 70/15-6/21 70/15-30/7 70/75-6/7 70/15-6/35 70/15-42/7 70/15-6/49