Add 90/48 and 15/81
1st number: 1 42/48, 2nd number: 15/81
90/48 + 15/81 is 445/216.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 81 is 1296
Next, find the equivalent fraction of both fractional numbers with denominator 1296 - For the 1st fraction, since 48 × 27 = 1296,
90/48 = 90 × 27/48 × 27 = 2430/1296 - Likewise, for the 2nd fraction, since 81 × 16 = 1296,
15/81 = 15 × 16/81 × 16 = 240/1296 - Add the two like fractions:
2430/1296 + 240/1296 = 2430 + 240/1296 = 2670/1296 - 2670/1296 simplified gives 445/216
- So, 90/48 + 15/81 = 445/216
In mixed form: 213/216
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/48+30/81 90/96+15/81 90/48+45/81 90/48+75/81