Add 28/25 and 21/16
1st number: 1 3/25, 2nd number: 1 5/16
28/25 + 21/16 is 973/400.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 16 is 400
Next, find the equivalent fraction of both fractional numbers with denominator 400 - For the 1st fraction, since 25 × 16 = 400,
28/25 = 28 × 16/25 × 16 = 448/400 - Likewise, for the 2nd fraction, since 16 × 25 = 400,
21/16 = 21 × 25/16 × 25 = 525/400 - Add the two like fractions:
448/400 + 525/400 = 448 + 525/400 = 973/400 - So, 28/25 + 21/16 = 973/400
In mixed form: 2173/400
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/25+21/16 28/25+42/16 28/50+21/16 28/25+21/32 84/25+21/16 28/25+63/16 28/75+21/16 28/25+21/48 28/25+21/80