Add 7/84 and 14/72
7/84 + 14/72 is 5/18.
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,
7/84 = 7 × 6/84 × 6 = 42/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
14/72 = 14 × 7/72 × 7 = 98/504 - Add the two like fractions:
42/504 + 98/504 = 42 + 98/504 = 140/504 - 140/504 simplified gives 5/18
- So, 7/84 + 14/72 = 5/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/84+14/72 7/84+28/72 21/84+14/72 7/84+42/72 35/84+14/72 7/84+70/72 49/84+14/72 7/84+98/72