Add 25/40 and 18/20
25/40 + 18/20 is 61/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
25/40 = 25 × 1/40 × 1 = 25/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
18/20 = 18 × 2/20 × 2 = 36/40 - Add the two like fractions:
25/40 + 36/40 = 25 + 36/40 = 61/40 - So, 25/40 + 18/20 = 61/40
In mixed form: 121/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/40+18/20 25/40+36/20 25/80+18/20 25/40+18/40 75/40+18/20 25/40+54/20 25/40+18/60 25/40+90/20