Add 10/21 and 98/45
1st number: 10/21, 2nd number: 2 8/45
10/21 + 98/45 is 836/315.
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,
10/21 = 10 × 15/21 × 15 = 150/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
98/45 = 98 × 7/45 × 7 = 686/315 - Add the two like fractions:
150/315 + 686/315 = 150 + 686/315 = 836/315 - So, 10/21 + 98/45 = 836/315
In mixed form: 2206/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/21+98/45 10/42+98/45 10/21+98/90 30/21+98/45 10/63+98/45 50/21+98/45 70/21+98/45