Add 42/56 and 20/36
42/56 + 20/36 is 47/36.
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,
20/36 = 20 × 14/36 × 14 = 280/504 - Add the two like fractions:
378/504 + 280/504 = 378 + 280/504 = 658/504 - 658/504 simplified gives 47/36
- So, 42/56 + 20/36 = 47/36
In mixed form: 111/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/56+20/36 42/56+40/36 42/56+20/72 42/56+60/36