Add 35/15 and 50/21
1st number: 2 5/15, 2nd number: 2 8/21
35/15 + 50/21 is 33/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 21 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 21 × 5 = 105,
50/21 = 50 × 5/21 × 5 = 250/105 - Add the two like fractions:
245/105 + 250/105 = 245 + 250/105 = 495/105 - 495/105 simplified gives 33/7
- So, 35/15 + 50/21 = 33/7
In mixed form: 45/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/15+50/21 35/30+50/21 35/15+50/42 35/45+50/21 35/15+50/63 35/75+50/21