Add 75/4 and 28/90
1st number: 18 3/4, 2nd number: 28/90
75/4 + 28/90 is 3431/180.
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,
75/4 = 75 × 45/4 × 45 = 3375/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
28/90 = 28 × 2/90 × 2 = 56/180 - Add the two like fractions:
3375/180 + 56/180 = 3375 + 56/180 = 3431/180 - So, 75/4 + 28/90 = 3431/180
In mixed form: 1911/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/4+56/90 75/8+28/90 75/4+84/90 75/12+28/90 75/20+28/90 75/28+28/90