Add 25/20 and 3/15
1st number: 1 5/20, 2nd number: 3/15
25/20 + 3/15 is 29/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
25/20 = 25 × 3/20 × 3 = 75/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
3/15 = 3 × 4/15 × 4 = 12/60 - Add the two like fractions:
75/60 + 12/60 = 75 + 12/60 = 87/60 - 87/60 simplified gives 29/20
- So, 25/20 + 3/15 = 29/20
In mixed form: 19/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/20+3/15 25/20+6/15 25/40+3/15 25/20+3/30 75/20+3/15 25/20+9/15 25/60+3/15 25/20+3/45 25/20+3/75 25/20+21/15