Add 42/84 and 48/27
1st number: 42/84, 2nd number: 1 21/27
42/84 + 48/27 is 41/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 27 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 84 × 9 = 756,
42/84 = 42 × 9/84 × 9 = 378/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
48/27 = 48 × 28/27 × 28 = 1344/756 - Add the two like fractions:
378/756 + 1344/756 = 378 + 1344/756 = 1722/756 - 1722/756 simplified gives 41/18
- So, 42/84 + 48/27 = 41/18
In mixed form: 25/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/84+96/27 42/84+48/54 42/84+48/81