Add 1/40 and 21/14
1st number: 1/40, 2nd number: 1 7/14
1/40 + 21/14 is 61/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 14 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
1/40 = 1 × 7/40 × 7 = 7/280 - Likewise, for the 2nd fraction, since 14 × 20 = 280,
21/14 = 21 × 20/14 × 20 = 420/280 - Add the two like fractions:
7/280 + 420/280 = 7 + 420/280 = 427/280 - 427/280 simplified gives 61/40
- So, 1/40 + 21/14 = 61/40
In mixed form: 121/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/40+21/14 1/40+42/14 1/80+21/14 1/40+21/28 3/40+21/14 1/40+63/14 1/40+21/42 5/40+21/14 1/40+21/70 7/40+21/14 1/40+21/98