Add 21/48 and 15/25
21/48 + 15/25 is 83/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 25 is 1200
Next, find the equivalent fraction of both fractional numbers with denominator 1200 - For the 1st fraction, since 48 × 25 = 1200,
21/48 = 21 × 25/48 × 25 = 525/1200 - Likewise, for the 2nd fraction, since 25 × 48 = 1200,
15/25 = 15 × 48/25 × 48 = 720/1200 - Add the two like fractions:
525/1200 + 720/1200 = 525 + 720/1200 = 1245/1200 - 1245/1200 simplified gives 83/80
- So, 21/48 + 15/25 = 83/80
In mixed form: 13/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/48+15/25 21/48+30/25 21/96+15/25 21/48+15/50 63/48+15/25 21/48+45/25 21/48+15/75 21/48+75/25