Subtract 40/21 from 35/24
1st number: 1 11/24, 2nd number: 1 19/21
35/24 - 40/21 is -25/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
35/24 = 35 × 7/24 × 7 = 245/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
40/21 = 40 × 8/21 × 8 = 320/168 - Subtract the two like fractions:
245/168 - 320/168 = 245 - 320/168 = -75/168 - After reducing the fraction, the answer is -25/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/24-40/21 35/24-80/21 35/48-40/21 35/24-40/42 35/72-40/21 35/24-40/63