Subtract 35/21 from 40/15
1st number: 2 10/15, 2nd number: 1 14/21
40/15 - 35/21 is 1/1.
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,
40/15 = 40 × 7/15 × 7 = 280/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
35/21 = 35 × 5/21 × 5 = 175/105 - Subtract the two like fractions:
280/105 - 175/105 = 280 - 175/105 = 105/105 - After reducing the fraction, the answer is 1/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/15-35/21 40/15-70/21 40/30-35/21 40/15-35/42 40/45-35/21 40/15-35/63 40/75-35/21