Add 27/90 and 15/28
27/90 + 15/28 is 117/140.
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,
27/90 = 27 × 14/90 × 14 = 378/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
15/28 = 15 × 45/28 × 45 = 675/1260 - Add the two like fractions:
378/1260 + 675/1260 = 378 + 675/1260 = 1053/1260 - 1053/1260 simplified gives 117/140
- So, 27/90 + 15/28 = 117/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/90+15/28 27/90+30/28 27/90+15/56 81/90+15/28 27/90+45/28 27/90+15/84 27/90+75/28