Add 21/12 and 25/50
1st number: 1 9/12, 2nd number: 25/50
21/12 + 25/50 is 9/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 50 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 12 × 25 = 300,
21/12 = 21 × 25/12 × 25 = 525/300 - Likewise, for the 2nd fraction, since 50 × 6 = 300,
25/50 = 25 × 6/50 × 6 = 150/300 - Add the two like fractions:
525/300 + 150/300 = 525 + 150/300 = 675/300 - 675/300 simplified gives 9/4
- So, 21/12 + 25/50 = 9/4
In mixed form: 21/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/12+25/50 21/24+25/50 63/12+25/50 21/12+75/50 21/36+25/50 21/60+25/50 21/84+25/50