Add 21/6 and 42/30
1st number: 3 3/6, 2nd number: 1 12/30
21/6 + 42/30 is 49/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 30 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 30 × 1 = 30,
42/30 = 42 × 1/30 × 1 = 42/30 - Add the two like fractions:
105/30 + 42/30 = 105 + 42/30 = 147/30 - 147/30 simplified gives 49/10
- So, 21/6 + 42/30 = 49/10
In mixed form: 49/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/6+42/30 21/6+84/30 21/12+42/30 21/6+42/60 63/6+42/30 21/18+42/30 21/6+42/90 21/30+42/30 21/42+42/30