Add 90/6 and 21/54
1st number: 15 0/6, 2nd number: 21/54
90/6 + 21/54 is 277/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 54 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 6 × 9 = 54,
90/6 = 90 × 9/6 × 9 = 810/54 - Likewise, for the 2nd fraction, since 54 × 1 = 54,
21/54 = 21 × 1/54 × 1 = 21/54 - Add the two like fractions:
810/54 + 21/54 = 810 + 21/54 = 831/54 - 831/54 simplified gives 277/18
- So, 90/6 + 21/54 = 277/18
In mixed form: 157/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/6+42/54 90/12+21/54 90/6+63/54 90/18+21/54 90/30+21/54 90/42+21/54