Add 21/40 and 48/27
1st number: 21/40, 2nd number: 1 21/27
21/40 + 48/27 is 829/360.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 27 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 40 × 27 = 1080,
21/40 = 21 × 27/40 × 27 = 567/1080 - Likewise, for the 2nd fraction, since 27 × 40 = 1080,
48/27 = 48 × 40/27 × 40 = 1920/1080 - Add the two like fractions:
567/1080 + 1920/1080 = 567 + 1920/1080 = 2487/1080 - 2487/1080 simplified gives 829/360
- So, 21/40 + 48/27 = 829/360
In mixed form: 2109/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/40+48/27 21/40+96/27 21/80+48/27 21/40+48/54 63/40+48/27 21/40+48/81