Add 90/27 and 42/81
1st number: 3 9/27, 2nd number: 42/81
90/27 + 42/81 is 104/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 27 × 3 = 81,
90/27 = 90 × 3/27 × 3 = 270/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
42/81 = 42 × 1/81 × 1 = 42/81 - Add the two like fractions:
270/81 + 42/81 = 270 + 42/81 = 312/81 - 312/81 simplified gives 104/27
- So, 90/27 + 42/81 = 104/27
In mixed form: 323/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/27+84/81 90/54+42/81 90/81+42/81