Add 25/20 and 28/18
1st number: 1 5/20, 2nd number: 1 10/18
25/20 + 28/18 is 101/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
25/20 = 25 × 9/20 × 9 = 225/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
28/18 = 28 × 10/18 × 10 = 280/180 - Add the two like fractions:
225/180 + 280/180 = 225 + 280/180 = 505/180 - 505/180 simplified gives 101/36
- So, 25/20 + 28/18 = 101/36
In mixed form: 229/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/20+28/18 25/20+56/18 25/40+28/18 25/20+28/36 75/20+28/18 25/20+84/18 25/60+28/18 25/20+28/54 25/20+28/90