Add 84/9 and 21/45
1st number: 9 3/9, 2nd number: 21/45
84/9 + 21/45 is 49/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 9 × 5 = 45,
84/9 = 84 × 5/9 × 5 = 420/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
21/45 = 21 × 1/45 × 1 = 21/45 - Add the two like fractions:
420/45 + 21/45 = 420 + 21/45 = 441/45 - 441/45 simplified gives 49/5
- So, 84/9 + 21/45 = 49/5
In mixed form: 94/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/9+42/45 84/18+21/45 84/9+21/90 84/9+63/45 84/27+21/45 84/45+21/45 84/63+21/45