Subtract 8/21 from 35/15
1st number: 2 5/15, 2nd number: 8/21
35/15 - 8/21 is 41/21.
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,
35/15 = 35 × 7/15 × 7 = 245/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
8/21 = 8 × 5/21 × 5 = 40/105 - Subtract the two like fractions:
245/105 - 40/105 = 245 - 40/105 = 205/105 - After reducing the fraction, the answer is 41/21
- In mixed form: 120/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/15-8/21 35/15-16/21 35/30-8/21 35/15-8/42 35/15-24/21 35/45-8/21 35/15-8/63 35/15-40/21 35/75-8/21 35/15-56/21