Add 28/45 and 9/90
28/45 + 9/90 is 13/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
28/45 = 28 × 2/45 × 2 = 56/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
9/90 = 9 × 1/90 × 1 = 9/90 - Add the two like fractions:
56/90 + 9/90 = 56 + 9/90 = 65/90 - 65/90 simplified gives 13/18
- So, 28/45 + 9/90 = 13/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/45+9/90 28/45+18/90 28/90+9/90 84/45+9/90 28/45+27/90 28/45+45/90 28/45+63/90