Add 21/14 and 25/4
1st number: 1 7/14, 2nd number: 6 1/4
21/14 + 25/4 is 31/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 4 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 14 × 2 = 28,
21/14 = 21 × 2/14 × 2 = 42/28 - Likewise, for the 2nd fraction, since 4 × 7 = 28,
25/4 = 25 × 7/4 × 7 = 175/28 - Add the two like fractions:
42/28 + 175/28 = 42 + 175/28 = 217/28 - 217/28 simplified gives 31/4
- So, 21/14 + 25/4 = 31/4
In mixed form: 73/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/14+25/4 21/14+50/4 21/28+25/4 21/14+25/8 63/14+25/4 21/14+75/4 21/42+25/4 21/14+25/12 21/70+25/4 21/14+25/20 21/98+25/4 21/14+25/28