Add 28/42 and 42/18
1st number: 28/42, 2nd number: 2 6/18
28/42 + 42/18 is 3/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
28/42 = 28 × 3/42 × 3 = 84/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
42/18 = 42 × 7/18 × 7 = 294/126 - Add the two like fractions:
84/126 + 294/126 = 84 + 294/126 = 378/126 - 378/126 simplified gives 3/1
- So, 28/42 + 42/18 = 3/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/42+42/18 28/42+84/18 28/84+42/18 28/42+42/36 84/42+42/18 28/42+42/54 28/42+42/90