Add 21/5 and 28/49
1st number: 4 1/5, 2nd number: 28/49
21/5 + 28/49 is 167/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 49 is 245
Next, find the equivalent fraction of both fractional numbers with denominator 245 - For the 1st fraction, since 5 × 49 = 245,
21/5 = 21 × 49/5 × 49 = 1029/245 - Likewise, for the 2nd fraction, since 49 × 5 = 245,
28/49 = 28 × 5/49 × 5 = 140/245 - Add the two like fractions:
1029/245 + 140/245 = 1029 + 140/245 = 1169/245 - 1169/245 simplified gives 167/35
- So, 21/5 + 28/49 = 167/35
In mixed form: 427/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/5+28/49 21/5+56/49 21/10+28/49 21/5+28/98 63/5+28/49 21/5+84/49 21/15+28/49 21/25+28/49 21/35+28/49