Add 27/4 and 28/90
1st number: 6 3/4, 2nd number: 28/90
27/4 + 28/90 is 1271/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
27/4 = 27 × 45/4 × 45 = 1215/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
28/90 = 28 × 2/90 × 2 = 56/180 - Add the two like fractions:
1215/180 + 56/180 = 1215 + 56/180 = 1271/180 - So, 27/4 + 28/90 = 1271/180
In mixed form: 711/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/4+28/90 27/4+56/90 27/8+28/90 81/4+28/90 27/4+84/90 27/12+28/90 27/20+28/90 27/28+28/90