Add 42/3 and 15/7
1st number: 14 0/3, 2nd number: 2 1/7
42/3 + 15/7 is 113/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
42/3 = 42 × 7/3 × 7 = 294/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
15/7 = 15 × 3/7 × 3 = 45/21 - Add the two like fractions:
294/21 + 45/21 = 294 + 45/21 = 339/21 - 339/21 simplified gives 113/7
- So, 42/3 + 15/7 = 113/7
In mixed form: 161/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/3+15/7 42/3+30/7 42/6+15/7 42/3+15/14 42/3+45/7 42/9+15/7 42/3+15/21 42/3+75/7 42/15+15/7 42/3+15/35 42/21+15/7 42/3+15/49