Add 21/5 and 15/24
1st number: 4 1/5, 2nd number: 15/24
21/5 + 15/24 is 193/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 5 × 24 = 120,
21/5 = 21 × 24/5 × 24 = 504/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
15/24 = 15 × 5/24 × 5 = 75/120 - Add the two like fractions:
504/120 + 75/120 = 504 + 75/120 = 579/120 - 579/120 simplified gives 193/40
- So, 21/5 + 15/24 = 193/40
In mixed form: 433/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/5+15/24 21/5+30/24 21/10+15/24 21/5+15/48 63/5+15/24 21/5+45/24 21/15+15/24 21/5+15/72 21/5+75/24 21/25+15/24 21/35+15/24