Add 7/14 and 40/21
1st number: 7/14, 2nd number: 1 19/21
7/14 + 40/21 is 101/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
7/14 = 7 × 3/14 × 3 = 21/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
40/21 = 40 × 2/21 × 2 = 80/42 - Add the two like fractions:
21/42 + 80/42 = 21 + 80/42 = 101/42 - So, 7/14 + 40/21 = 101/42
In mixed form: 217/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 7/14+80/21 7/28+40/21 7/14+40/42 21/14+40/21 7/42+40/21 7/14+40/63 35/14+40/21 7/70+40/21 49/14+40/21 7/98+40/21