Add 18/15 and 35/90
1st number: 1 3/15, 2nd number: 35/90
18/15 + 35/90 is 143/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
18/15 = 18 × 6/15 × 6 = 108/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
35/90 = 35 × 1/90 × 1 = 35/90 - Add the two like fractions:
108/90 + 35/90 = 108 + 35/90 = 143/90 - So, 18/15 + 35/90 = 143/90
In mixed form: 153/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/15+35/90 18/15+70/90 18/30+35/90 54/15+35/90 18/45+35/90 90/15+35/90 18/75+35/90