Add 84/9 and 21/30
1st number: 9 3/9, 2nd number: 21/30
84/9 + 21/30 is 301/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
84/9 = 84 × 10/9 × 10 = 840/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
21/30 = 21 × 3/30 × 3 = 63/90 - Add the two like fractions:
840/90 + 63/90 = 840 + 63/90 = 903/90 - 903/90 simplified gives 301/30
- So, 84/9 + 21/30 = 301/30
In mixed form: 101/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/9+42/30 84/18+21/30 84/9+21/60 84/9+63/30 84/27+21/30 84/9+21/90 84/45+21/30 84/63+21/30