Add 20/15 and 30/24
1st number: 1 5/15, 2nd number: 1 6/24
20/15 + 30/24 is 31/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
20/15 = 20 × 8/15 × 8 = 160/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
30/24 = 30 × 5/24 × 5 = 150/120 - Add the two like fractions:
160/120 + 150/120 = 160 + 150/120 = 310/120 - 310/120 simplified gives 31/12
- So, 20/15 + 30/24 = 31/12
In mixed form: 27/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/15+30/24 20/15+60/24 20/30+30/24 20/15+30/48 60/15+30/24 20/15+90/24 20/45+30/24 20/15+30/72 20/75+30/24