Add 20/72 and 3/28
20/72 + 3/28 is 97/252.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 28 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
20/72 = 20 × 7/72 × 7 = 140/504 - Likewise, for the 2nd fraction, since 28 × 18 = 504,
3/28 = 3 × 18/28 × 18 = 54/504 - Add the two like fractions:
140/504 + 54/504 = 140 + 54/504 = 194/504 - 194/504 simplified gives 97/252
- So, 20/72 + 3/28 = 97/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/72+3/28 20/72+6/28 20/72+3/56 60/72+3/28 20/72+9/28 20/72+3/84 20/72+15/28 20/72+21/28