Subtract 21/40 from 10/6
1st number: 1 4/6, 2nd number: 21/40
10/6 - 21/40 is 137/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 6 × 20 = 120,
10/6 = 10 × 20/6 × 20 = 200/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
21/40 = 21 × 3/40 × 3 = 63/120 - Subtract the two like fractions:
200/120 - 63/120 = 200 - 63/120 = 137/120 - In mixed form: 117/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/6-21/40 10/6-42/40 10/12-21/40 10/6-21/80 30/6-21/40 10/6-63/40 10/18-21/40 50/6-21/40 10/30-21/40 70/6-21/40 10/42-21/40