Add 35/15 and 81/7
1st number: 2 5/15, 2nd number: 11 4/7
35/15 + 81/7 is 292/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
35/15 = 35 × 7/15 × 7 = 245/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
81/7 = 81 × 15/7 × 15 = 1215/105 - Add the two like fractions:
245/105 + 1215/105 = 245 + 1215/105 = 1460/105 - 1460/105 simplified gives 292/21
- So, 35/15 + 81/7 = 292/21
In mixed form: 1319/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/15+81/7 35/30+81/7 35/15+81/14 35/45+81/7 35/15+81/21 35/75+81/7 35/15+81/35 35/15+81/49