Subtract 40/21 from 49/5
1st number: 9 4/5, 2nd number: 1 19/21
49/5 - 40/21 is 829/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 5 × 21 = 105,
49/5 = 49 × 21/5 × 21 = 1029/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
40/21 = 40 × 5/21 × 5 = 200/105 - Subtract the two like fractions:
1029/105 - 200/105 = 1029 - 200/105 = 829/105 - In mixed form: 794/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/5-40/21 49/5-80/21 49/10-40/21 49/5-40/42 49/15-40/21 49/5-40/63 49/25-40/21 49/35-40/21