Add 27/15 and 50/21
1st number: 1 12/15, 2nd number: 2 8/21
27/15 + 50/21 is 439/105.
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,
27/15 = 27 × 7/15 × 7 = 189/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
50/21 = 50 × 5/21 × 5 = 250/105 - Add the two like fractions:
189/105 + 250/105 = 189 + 250/105 = 439/105 - So, 27/15 + 50/21 = 439/105
In mixed form: 419/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/15+50/21 27/30+50/21 27/15+50/42 81/15+50/21 27/45+50/21 27/15+50/63 27/75+50/21