Add 15/9 and 42/30
1st number: 1 6/9, 2nd number: 1 12/30
15/9 + 42/30 is 46/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
15/9 = 15 × 10/9 × 10 = 150/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
42/30 = 42 × 3/30 × 3 = 126/90 - Add the two like fractions:
150/90 + 126/90 = 150 + 126/90 = 276/90 - 276/90 simplified gives 46/15
- So, 15/9 + 42/30 = 46/15
In mixed form: 31/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/9+42/30 15/9+84/30 15/18+42/30 15/9+42/60 45/9+42/30 15/27+42/30 15/9+42/90 75/9+42/30 15/45+42/30 15/63+42/30