Add 49/15 and 21/42
1st number: 3 4/15, 2nd number: 21/42
49/15 + 21/42 is 113/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
49/15 = 49 × 14/15 × 14 = 686/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
21/42 = 21 × 5/42 × 5 = 105/210 - Add the two like fractions:
686/210 + 105/210 = 686 + 105/210 = 791/210 - 791/210 simplified gives 113/30
- So, 49/15 + 21/42 = 113/30
In mixed form: 323/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/15+21/42 49/30+21/42 49/15+21/84 49/15+63/42 49/45+21/42 49/75+21/42