Add 90/18 and 42/27
1st number: 5 0/18, 2nd number: 1 15/27
90/18 + 42/27 is 59/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 27 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 18 × 3 = 54,
90/18 = 90 × 3/18 × 3 = 270/54 - Likewise, for the 2nd fraction, since 27 × 2 = 54,
42/27 = 42 × 2/27 × 2 = 84/54 - Add the two like fractions:
270/54 + 84/54 = 270 + 84/54 = 354/54 - 354/54 simplified gives 59/9
- So, 90/18 + 42/27 = 59/9
In mixed form: 65/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/18+84/27 90/36+42/27 90/18+42/54 90/54+42/27 90/18+42/81