Subtract 10/6 from 40/21
1st number: 1 19/21, 2nd number: 1 4/6
40/21 - 10/6 is 5/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 6 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
40/21 = 40 × 2/21 × 2 = 80/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
10/6 = 10 × 7/6 × 7 = 70/42 - Subtract the two like fractions:
80/42 - 70/42 = 80 - 70/42 = 10/42 - After reducing the fraction, the answer is 5/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/21-10/6 40/21-20/6 40/42-10/6 40/21-10/12 40/21-30/6 40/63-10/6 40/21-10/18 40/21-50/6 40/21-10/30 40/21-70/6 40/21-10/42