Add 15/24 and 7/20
15/24 + 7/20 is 39/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 20 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 24 × 5 = 120,
15/24 = 15 × 5/24 × 5 = 75/120 - Likewise, for the 2nd fraction, since 20 × 6 = 120,
7/20 = 7 × 6/20 × 6 = 42/120 - Add the two like fractions:
75/120 + 42/120 = 75 + 42/120 = 117/120 - 117/120 simplified gives 39/40
- So, 15/24 + 7/20 = 39/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/24+7/20 15/24+14/20 15/48+7/20 15/24+7/40 45/24+7/20 15/24+21/20 15/72+7/20 15/24+7/60 75/24+7/20 15/24+35/20 15/24+49/20