Add 25/40 and 28/18
1st number: 25/40, 2nd number: 1 10/18
25/40 + 28/18 is 157/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 18 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
25/40 = 25 × 9/40 × 9 = 225/360 - Likewise, for the 2nd fraction, since 18 × 20 = 360,
28/18 = 28 × 20/18 × 20 = 560/360 - Add the two like fractions:
225/360 + 560/360 = 225 + 560/360 = 785/360 - 785/360 simplified gives 157/72
- So, 25/40 + 28/18 = 157/72
In mixed form: 213/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/40+28/18 25/40+56/18 25/80+28/18 25/40+28/36 75/40+28/18 25/40+84/18 25/40+28/54 25/40+28/90