Add 42/15 and 84/9
1st number: 2 12/15, 2nd number: 9 3/9
42/15 + 84/9 is 182/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
42/15 = 42 × 3/15 × 3 = 126/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
84/9 = 84 × 5/9 × 5 = 420/45 - Add the two like fractions:
126/45 + 420/45 = 126 + 420/45 = 546/45 - 546/45 simplified gives 182/15
- So, 42/15 + 84/9 = 182/15
In mixed form: 122/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/15+84/9 42/30+84/9 42/15+84/18 42/45+84/9 42/15+84/27 42/75+84/9 42/15+84/45 42/15+84/63