Add 21/16 and 21/9
1st number: 1 5/16, 2nd number: 2 3/9
21/16 + 21/9 is 175/48.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 9 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 16 × 9 = 144,
21/16 = 21 × 9/16 × 9 = 189/144 - Likewise, for the 2nd fraction, since 9 × 16 = 144,
21/9 = 21 × 16/9 × 16 = 336/144 - Add the two like fractions:
189/144 + 336/144 = 189 + 336/144 = 525/144 - 525/144 simplified gives 175/48
- So, 21/16 + 21/9 = 175/48
In mixed form: 331/48
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/16+21/9 21/16+42/9 21/32+21/9 21/16+21/18 63/16+21/9 21/16+63/9 21/48+21/9 21/16+21/27 21/80+21/9 21/16+21/45 21/16+21/63