Add 21/15 and 20/49
1st number: 1 6/15, 2nd number: 20/49
21/15 + 20/49 is 443/245.
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,
21/15 = 21 × 49/15 × 49 = 1029/735 - Likewise, for the 2nd fraction, since 49 × 15 = 735,
20/49 = 20 × 15/49 × 15 = 300/735 - Add the two like fractions:
1029/735 + 300/735 = 1029 + 300/735 = 1329/735 - 1329/735 simplified gives 443/245
- So, 21/15 + 20/49 = 443/245
In mixed form: 1198/245
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/15+20/49 21/15+40/49 21/30+20/49 21/15+20/98 63/15+20/49 21/15+60/49 21/45+20/49 21/75+20/49