Subtract 24/21 from 70/15
1st number: 4 10/15, 2nd number: 1 3/21
70/15 - 24/21 is 74/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 21 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 21 × 5 = 105,
24/21 = 24 × 5/21 × 5 = 120/105 - Subtract the two like fractions:
490/105 - 120/105 = 490 - 120/105 = 370/105 - After reducing the fraction, the answer is 74/21
- In mixed form: 311/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/15-48/21 70/30-24/21 70/15-24/42 70/15-72/21 70/45-24/21 70/15-24/63 70/75-24/21