Add 14/21 and 84/45
1st number: 14/21, 2nd number: 1 39/45
14/21 + 84/45 is 38/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 21 × 15 = 315,
14/21 = 14 × 15/21 × 15 = 210/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
84/45 = 84 × 7/45 × 7 = 588/315 - Add the two like fractions:
210/315 + 588/315 = 210 + 588/315 = 798/315 - 798/315 simplified gives 38/15
- So, 14/21 + 84/45 = 38/15
In mixed form: 28/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/21+84/45 14/42+84/45 14/21+84/90 42/21+84/45 14/63+84/45 70/21+84/45 98/21+84/45