Add 21/24 and 90/8
1st number: 21/24, 2nd number: 11 2/8
21/24 + 90/8 is 97/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 8 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 24 × 1 = 24,
21/24 = 21 × 1/24 × 1 = 21/24 - Likewise, for the 2nd fraction, since 8 × 3 = 24,
90/8 = 90 × 3/8 × 3 = 270/24 - Add the two like fractions:
21/24 + 270/24 = 21 + 270/24 = 291/24 - 291/24 simplified gives 97/8
- So, 21/24 + 90/8 = 97/8
In mixed form: 121/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/24+90/8 21/48+90/8 21/24+90/16 63/24+90/8 21/72+90/8 21/24+90/24 21/24+90/40 21/24+90/56