Add 28/90 and 9/28
28/90 + 9/28 is 797/1260.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 28 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
28/90 = 28 × 14/90 × 14 = 392/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
9/28 = 9 × 45/28 × 45 = 405/1260 - Add the two like fractions:
392/1260 + 405/1260 = 392 + 405/1260 = 797/1260 - So, 28/90 + 9/28 = 797/1260
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/90+9/28 28/90+18/28 28/90+9/56 84/90+9/28 28/90+27/28 28/90+9/84 28/90+45/28 28/90+63/28