Add 84/36 and 21/54
1st number: 2 12/36, 2nd number: 21/54
84/36 + 21/54 is 49/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 54 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 36 × 3 = 108,
84/36 = 84 × 3/36 × 3 = 252/108 - Likewise, for the 2nd fraction, since 54 × 2 = 108,
21/54 = 21 × 2/54 × 2 = 42/108 - Add the two like fractions:
252/108 + 42/108 = 252 + 42/108 = 294/108 - 294/108 simplified gives 49/18
- So, 84/36 + 21/54 = 49/18
In mixed form: 213/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/36+42/54 84/72+21/54 84/36+63/54