Add 15/4 and 42/9
1st number: 3 3/4, 2nd number: 4 6/9
15/4 + 42/9 is 101/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 9 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 4 × 9 = 36,
15/4 = 15 × 9/4 × 9 = 135/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
42/9 = 42 × 4/9 × 4 = 168/36 - Add the two like fractions:
135/36 + 168/36 = 135 + 168/36 = 303/36 - 303/36 simplified gives 101/12
- So, 15/4 + 42/9 = 101/12
In mixed form: 85/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/4+42/9 15/4+84/9 15/8+42/9 15/4+42/18 45/4+42/9 15/12+42/9 15/4+42/27 75/4+42/9 15/20+42/9 15/4+42/45 15/28+42/9 15/4+42/63