Add 36/15 and 81/42
1st number: 2 6/15, 2nd number: 1 39/42
36/15 + 81/42 is 303/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
36/15 = 36 × 14/15 × 14 = 504/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
81/42 = 81 × 5/42 × 5 = 405/210 - Add the two like fractions:
504/210 + 405/210 = 504 + 405/210 = 909/210 - 909/210 simplified gives 303/70
- So, 36/15 + 81/42 = 303/70
In mixed form: 423/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/15+81/42 36/30+81/42 36/15+81/84 36/45+81/42 36/75+81/42