Add 21/4 and 25/12
1st number: 5 1/4, 2nd number: 2 1/12
21/4 + 25/12 is 22/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 4 × 3 = 12,
21/4 = 21 × 3/4 × 3 = 63/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
25/12 = 25 × 1/12 × 1 = 25/12 - Add the two like fractions:
63/12 + 25/12 = 63 + 25/12 = 88/12 - 88/12 simplified gives 22/3
- So, 21/4 + 25/12 = 22/3
In mixed form: 71/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/4+25/12 21/4+50/12 21/8+25/12 21/4+25/24 63/4+25/12 21/4+75/12 21/12+25/12 21/4+25/36 21/20+25/12 21/4+25/60 21/28+25/12 21/4+25/84