Add 27/90 and 42/28
1st number: 27/90, 2nd number: 1 14/28
27/90 + 42/28 is 9/5.
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,
42/28 = 42 × 45/28 × 45 = 1890/1260 - Add the two like fractions:
378/1260 + 1890/1260 = 378 + 1890/1260 = 2268/1260 - 2268/1260 simplified gives 9/5
- So, 27/90 + 42/28 = 9/5
In mixed form: 14/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/90+42/28 27/90+84/28 27/90+42/56 81/90+42/28 27/90+42/84