Add 28/14 and 49/40
1st number: 2 0/14, 2nd number: 1 9/40
28/14 + 49/40 is 129/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 14 × 20 = 280,
28/14 = 28 × 20/14 × 20 = 560/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
49/40 = 49 × 7/40 × 7 = 343/280 - Add the two like fractions:
560/280 + 343/280 = 560 + 343/280 = 903/280 - 903/280 simplified gives 129/40
- So, 28/14 + 49/40 = 129/40
In mixed form: 39/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/14+49/40 28/14+98/40 28/14+49/80 84/14+49/40 28/42+49/40 28/70+49/40 28/98+49/40