Add 1/84 and 20/72
1/84 + 20/72 is 73/252.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 84 × 6 = 504,
1/84 = 1 × 6/84 × 6 = 6/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
20/72 = 20 × 7/72 × 7 = 140/504 - Add the two like fractions:
6/504 + 140/504 = 6 + 140/504 = 146/504 - 146/504 simplified gives 73/252
- So, 1/84 + 20/72 = 73/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/84+20/72 1/84+40/72 3/84+20/72 1/84+60/72 5/84+20/72 7/84+20/72