Add 20/12 and 28/49
1st number: 1 8/12, 2nd number: 28/49
20/12 + 28/49 is 47/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 49 is 588
Next, find the equivalent fraction of both fractional numbers with denominator 588 - For the 1st fraction, since 12 × 49 = 588,
20/12 = 20 × 49/12 × 49 = 980/588 - Likewise, for the 2nd fraction, since 49 × 12 = 588,
28/49 = 28 × 12/49 × 12 = 336/588 - Add the two like fractions:
980/588 + 336/588 = 980 + 336/588 = 1316/588 - 1316/588 simplified gives 47/21
- So, 20/12 + 28/49 = 47/21
In mixed form: 25/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/12+28/49 20/12+56/49 20/24+28/49 20/12+28/98 60/12+28/49 20/12+84/49 20/36+28/49 20/60+28/49 20/84+28/49