Add 27/20 and 18/24
1st number: 1 7/20, 2nd number: 18/24
27/20 + 18/24 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 20 × 6 = 120,
27/20 = 27 × 6/20 × 6 = 162/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
18/24 = 18 × 5/24 × 5 = 90/120 - Add the two like fractions:
162/120 + 90/120 = 162 + 90/120 = 252/120 - 252/120 simplified gives 21/10
- So, 27/20 + 18/24 = 21/10
In mixed form: 21/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/20+18/24 27/20+36/24 27/40+18/24 27/20+18/48 81/20+18/24 27/20+54/24 27/60+18/24 27/20+18/72 27/20+90/24