Add 10/18 and 15/90
10/18 + 15/90 is 13/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
10/18 = 10 × 5/18 × 5 = 50/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
15/90 = 15 × 1/90 × 1 = 15/90 - Add the two like fractions:
50/90 + 15/90 = 50 + 15/90 = 65/90 - 65/90 simplified gives 13/18
- So, 10/18 + 15/90 = 13/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/18+15/90 10/18+30/90 10/36+15/90 30/18+15/90 10/18+45/90 10/54+15/90 50/18+15/90 10/18+75/90 10/90+15/90 70/18+15/90