Add 21/6 and 25/15
1st number: 3 3/6, 2nd number: 1 10/15
21/6 + 25/15 is 31/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 15 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 6 × 5 = 30,
21/6 = 21 × 5/6 × 5 = 105/30 - Likewise, for the 2nd fraction, since 15 × 2 = 30,
25/15 = 25 × 2/15 × 2 = 50/30 - Add the two like fractions:
105/30 + 50/30 = 105 + 50/30 = 155/30 - 155/30 simplified gives 31/6
- So, 21/6 + 25/15 = 31/6
In mixed form: 51/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/6+25/15 21/6+50/15 21/12+25/15 21/6+25/30 63/6+25/15 21/6+75/15 21/18+25/15 21/6+25/45 21/30+25/15 21/6+25/75 21/42+25/15