Subtract 4/7 from 70/15
1st number: 4 10/15, 2nd number: 4/7
70/15 - 4/7 is 86/21.
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,
4/7 = 4 × 15/7 × 15 = 60/105 - Subtract the two like fractions:
490/105 - 60/105 = 490 - 60/105 = 430/105 - After reducing the fraction, the answer is 86/21
- In mixed form: 42/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/15-8/7 70/30-4/7 70/15-4/14 70/15-12/7 70/45-4/7 70/15-4/21 70/15-20/7 70/75-4/7 70/15-4/35 70/15-28/7 70/15-4/49