Add 42/56 and 18/36
42/56 + 18/36 is 5/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 36 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
42/56 = 42 × 9/56 × 9 = 378/504 - Likewise, for the 2nd fraction, since 36 × 14 = 504,
18/36 = 18 × 14/36 × 14 = 252/504 - Add the two like fractions:
378/504 + 252/504 = 378 + 252/504 = 630/504 - 630/504 simplified gives 5/4
- So, 42/56 + 18/36 = 5/4
In mixed form: 11/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/56+18/36 42/56+18/72 42/56+54/36 42/56+90/36