Add 84/24 and 42/27
1st number: 3 12/24, 2nd number: 1 15/27
84/24 + 42/27 is 91/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 27 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 24 × 9 = 216,
84/24 = 84 × 9/24 × 9 = 756/216 - Likewise, for the 2nd fraction, since 27 × 8 = 216,
42/27 = 42 × 8/27 × 8 = 336/216 - Add the two like fractions:
756/216 + 336/216 = 756 + 336/216 = 1092/216 - 1092/216 simplified gives 91/18
- So, 84/24 + 42/27 = 91/18
In mixed form: 51/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/24+84/27 84/48+42/27 84/24+42/54 84/72+42/27 84/24+42/81