Add 81/42 and 5/36
1st number: 1 39/42, 2nd number: 5/36
81/42 + 5/36 is 521/252.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 42 × 6 = 252,
81/42 = 81 × 6/42 × 6 = 486/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
5/36 = 5 × 7/36 × 7 = 35/252 - Add the two like fractions:
486/252 + 35/252 = 486 + 35/252 = 521/252 - So, 81/42 + 5/36 = 521/252
In mixed form: 217/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/42+10/36 81/84+5/36 81/42+5/72 81/42+15/36 81/42+25/36 81/42+35/36