Add 90/7 and 2/81
1st number: 12 6/7, 2nd number: 2/81
90/7 + 2/81 is 7304/567.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 7 × 81 = 567,
90/7 = 90 × 81/7 × 81 = 7290/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
2/81 = 2 × 7/81 × 7 = 14/567 - Add the two like fractions:
7290/567 + 14/567 = 7290 + 14/567 = 7304/567 - So, 90/7 + 2/81 = 7304/567
In mixed form: 12500/567
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/7+4/81 90/14+2/81 90/7+6/81 90/21+2/81 90/7+10/81 90/35+2/81 90/7+14/81 90/49+2/81