Add 90/48 and 21/54
1st number: 1 42/48, 2nd number: 21/54
90/48 + 21/54 is 163/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 54 is 432
Next, find the equivalent fraction of both fractional numbers with denominator 432 - For the 1st fraction, since 48 × 9 = 432,
90/48 = 90 × 9/48 × 9 = 810/432 - Likewise, for the 2nd fraction, since 54 × 8 = 432,
21/54 = 21 × 8/54 × 8 = 168/432 - Add the two like fractions:
810/432 + 168/432 = 810 + 168/432 = 978/432 - 978/432 simplified gives 163/72
- So, 90/48 + 21/54 = 163/72
In mixed form: 219/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/48+42/54 90/96+21/54 90/48+63/54