Add 42/8 and 42/18
1st number: 5 2/8, 2nd number: 2 6/18
42/8 + 42/18 is 91/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
42/8 = 42 × 9/8 × 9 = 378/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
42/18 = 42 × 4/18 × 4 = 168/72 - Add the two like fractions:
378/72 + 168/72 = 378 + 168/72 = 546/72 - 546/72 simplified gives 91/12
- So, 42/8 + 42/18 = 91/12
In mixed form: 77/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/8+42/18 42/8+84/18 42/16+42/18 42/8+42/36 42/24+42/18 42/8+42/54 42/40+42/18 42/8+42/90 42/56+42/18