Add 36/21 and 27/7
1st number: 1 15/21, 2nd number: 3 6/7
36/21 + 27/7 is 39/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 21 × 1 = 21,
36/21 = 36 × 1/21 × 1 = 36/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
27/7 = 27 × 3/7 × 3 = 81/21 - Add the two like fractions:
36/21 + 81/21 = 36 + 81/21 = 117/21 - 117/21 simplified gives 39/7
- So, 36/21 + 27/7 = 39/7
In mixed form: 54/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/21+27/7 36/21+54/7 36/42+27/7 36/21+27/14 36/21+81/7 36/63+27/7 36/21+27/21 36/21+27/35 36/21+27/49