Add 90/18 and 27/12
1st number: 5 0/18, 2nd number: 2 3/12
90/18 + 27/12 is 29/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
90/18 = 90 × 2/18 × 2 = 180/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
27/12 = 27 × 3/12 × 3 = 81/36 - Add the two like fractions:
180/36 + 81/36 = 180 + 81/36 = 261/36 - 261/36 simplified gives 29/4
- So, 90/18 + 27/12 = 29/4
In mixed form: 71/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/18+54/12 90/36+27/12 90/18+27/24 90/18+81/12 90/54+27/12 90/18+27/36 90/18+27/60 90/18+27/84