Add 15/42 and 35/28
1st number: 15/42, 2nd number: 1 7/28
15/42 + 35/28 is 45/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
15/42 = 15 × 2/42 × 2 = 30/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
35/28 = 35 × 3/28 × 3 = 105/84 - Add the two like fractions:
30/84 + 105/84 = 30 + 105/84 = 135/84 - 135/84 simplified gives 45/28
- So, 15/42 + 35/28 = 45/28
In mixed form: 117/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/42+35/28 15/42+70/28 15/84+35/28 15/42+35/56 45/42+35/28 15/42+35/84 75/42+35/28