Add 20/28 and 1/72
20/28 + 1/72 is 367/504.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 28 × 18 = 504,
20/28 = 20 × 18/28 × 18 = 360/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
1/72 = 1 × 7/72 × 7 = 7/504 - Add the two like fractions:
360/504 + 7/504 = 360 + 7/504 = 367/504 - So, 20/28 + 1/72 = 367/504
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/28+1/72 20/28+2/72 20/56+1/72 60/28+1/72 20/28+3/72 20/84+1/72 20/28+5/72 20/28+7/72