Add 3/84 and 3/72
3/84 + 3/72 is 13/168.
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,
3/84 = 3 × 6/84 × 6 = 18/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
3/72 = 3 × 7/72 × 7 = 21/504 - Add the two like fractions:
18/504 + 21/504 = 18 + 21/504 = 39/504 - 39/504 simplified gives 13/168
- So, 3/84 + 3/72 = 13/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/84+3/72 3/84+6/72 9/84+3/72 3/84+9/72 15/84+3/72 3/84+15/72 21/84+3/72 3/84+21/72