Add 20/15 and 84/49
1st number: 1 5/15, 2nd number: 1 35/49
20/15 + 84/49 is 64/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 49 is 735
Next, find the equivalent fraction of both fractional numbers with denominator 735 - For the 1st fraction, since 15 × 49 = 735,
20/15 = 20 × 49/15 × 49 = 980/735 - Likewise, for the 2nd fraction, since 49 × 15 = 735,
84/49 = 84 × 15/49 × 15 = 1260/735 - Add the two like fractions:
980/735 + 1260/735 = 980 + 1260/735 = 2240/735 - 2240/735 simplified gives 64/21
- So, 20/15 + 84/49 = 64/21
In mixed form: 31/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/15+84/49 20/30+84/49 20/15+84/98 60/15+84/49 20/45+84/49 20/75+84/49