Add 56/21 and 24/45
1st number: 2 14/21, 2nd number: 24/45
56/21 + 24/45 is 16/5.
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,
56/21 = 56 × 15/21 × 15 = 840/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
24/45 = 24 × 7/45 × 7 = 168/315 - Add the two like fractions:
840/315 + 168/315 = 840 + 168/315 = 1008/315 - 1008/315 simplified gives 16/5
- So, 56/21 + 24/45 = 16/5
In mixed form: 31/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/21+48/45 56/42+24/45 56/21+24/90 56/21+72/45 56/63+24/45