Add 28/15 and 42/45
1st number: 1 13/15, 2nd number: 42/45
28/15 + 42/45 is 14/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
28/15 = 28 × 3/15 × 3 = 84/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
42/45 = 42 × 1/45 × 1 = 42/45 - Add the two like fractions:
84/45 + 42/45 = 84 + 42/45 = 126/45 - 126/45 simplified gives 14/5
- So, 28/15 + 42/45 = 14/5
In mixed form: 24/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/15+42/45 28/15+84/45 28/30+42/45 28/15+42/90 84/15+42/45 28/45+42/45 28/75+42/45