Add 35/15 and 30/28
1st number: 2 5/15, 2nd number: 1 2/28
35/15 + 30/28 is 143/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
35/15 = 35 × 28/15 × 28 = 980/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
30/28 = 30 × 15/28 × 15 = 450/420 - Add the two like fractions:
980/420 + 450/420 = 980 + 450/420 = 1430/420 - 1430/420 simplified gives 143/42
- So, 35/15 + 30/28 = 143/42
In mixed form: 317/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/15+30/28 35/15+60/28 35/30+30/28 35/15+30/56 35/15+90/28 35/45+30/28 35/15+30/84 35/75+30/28