Subtract 25/40 from 35/21
1st number: 1 14/21, 2nd number: 25/40
35/21 - 25/40 is 25/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 21 × 40 = 840,
35/21 = 35 × 40/21 × 40 = 1400/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
25/40 = 25 × 21/40 × 21 = 525/840 - Subtract the two like fractions:
1400/840 - 525/840 = 1400 - 525/840 = 875/840 - After reducing the fraction, the answer is 25/24
- In mixed form: 11/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21-25/40 35/21-50/40 35/42-25/40 35/21-25/80 35/21-75/40 35/63-25/40