Add 21/4 and 25/10
1st number: 5 1/4, 2nd number: 2 5/10
21/4 + 25/10 is 31/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
21/4 = 21 × 5/4 × 5 = 105/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
25/10 = 25 × 2/10 × 2 = 50/20 - Add the two like fractions:
105/20 + 50/20 = 105 + 50/20 = 155/20 - 155/20 simplified gives 31/4
- So, 21/4 + 25/10 = 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: 42/4+25/10 21/4+50/10 21/8+25/10 21/4+25/20 63/4+25/10 21/4+75/10 21/12+25/10 21/4+25/30 21/20+25/10 21/4+25/50 21/28+25/10 21/4+25/70