Add 21/14 and 40/12
1st number: 1 7/14, 2nd number: 3 4/12
21/14 + 40/12 is 29/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 14 × 6 = 84,
21/14 = 21 × 6/14 × 6 = 126/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
40/12 = 40 × 7/12 × 7 = 280/84 - Add the two like fractions:
126/84 + 280/84 = 126 + 280/84 = 406/84 - 406/84 simplified gives 29/6
- So, 21/14 + 40/12 = 29/6
In mixed form: 45/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/14+40/12 21/14+80/12 21/28+40/12 21/14+40/24 63/14+40/12 21/42+40/12 21/14+40/36 21/70+40/12 21/14+40/60 21/98+40/12 21/14+40/84