Add 27/42 and 54/36
1st number: 27/42, 2nd number: 1 18/36
27/42 + 54/36 is 15/7.
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,
27/42 = 27 × 6/42 × 6 = 162/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
54/36 = 54 × 7/36 × 7 = 378/252 - Add the two like fractions:
162/252 + 378/252 = 162 + 378/252 = 540/252 - 540/252 simplified gives 15/7
- So, 27/42 + 54/36 = 15/7
In mixed form: 21/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42+54/36 27/84+54/36 27/42+54/72 81/42+54/36