Add 21/40 and 14/10
1st number: 21/40, 2nd number: 1 4/10
21/40 + 14/10 is 77/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 10 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
21/40 = 21 × 1/40 × 1 = 21/40 - Likewise, for the 2nd fraction, since 10 × 4 = 40,
14/10 = 14 × 4/10 × 4 = 56/40 - Add the two like fractions:
21/40 + 56/40 = 21 + 56/40 = 77/40 - So, 21/40 + 14/10 = 77/40
In mixed form: 137/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/40+14/10 21/40+28/10 21/80+14/10 21/40+14/20 63/40+14/10 21/40+42/10 21/40+14/30 21/40+70/10 21/40+14/50 21/40+98/10 21/40+14/70