Add 81/48 and 20/18
1st number: 1 33/48, 2nd number: 1 2/18
81/48 + 20/18 is 403/144.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 18 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 48 × 3 = 144,
81/48 = 81 × 3/48 × 3 = 243/144 - Likewise, for the 2nd fraction, since 18 × 8 = 144,
20/18 = 20 × 8/18 × 8 = 160/144 - Add the two like fractions:
243/144 + 160/144 = 243 + 160/144 = 403/144 - So, 81/48 + 20/18 = 403/144
In mixed form: 2115/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/48+40/18 81/96+20/18 81/48+20/36 81/48+60/18 81/48+20/54 81/48+20/90