Add 15/12 and 20/25
1st number: 1 3/12, 2nd number: 20/25
15/12 + 20/25 is 41/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 25 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 12 × 25 = 300,
15/12 = 15 × 25/12 × 25 = 375/300 - Likewise, for the 2nd fraction, since 25 × 12 = 300,
20/25 = 20 × 12/25 × 12 = 240/300 - Add the two like fractions:
375/300 + 240/300 = 375 + 240/300 = 615/300 - 615/300 simplified gives 41/20
- So, 15/12 + 20/25 = 41/20
In mixed form: 21/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/12+20/25 15/12+40/25 15/24+20/25 15/12+20/50 45/12+20/25 15/12+60/25 15/36+20/25 15/12+20/75 75/12+20/25 15/60+20/25 15/84+20/25