Add 42/84 and 42/18
1st number: 42/84, 2nd number: 2 6/18
42/84 + 42/18 is 17/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
42/84 = 42 × 3/84 × 3 = 126/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
42/18 = 42 × 14/18 × 14 = 588/252 - Add the two like fractions:
126/252 + 588/252 = 126 + 588/252 = 714/252 - 714/252 simplified gives 17/6
- So, 42/84 + 42/18 = 17/6
In mixed form: 25/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/84+84/18 42/84+42/36 42/84+42/54 42/84+42/90