Add 12/7 and 7/72
1st number: 1 5/7, 2nd number: 7/72
12/7 + 7/72 is 913/504.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 7 × 72 = 504,
12/7 = 12 × 72/7 × 72 = 864/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
7/72 = 7 × 7/72 × 7 = 49/504 - Add the two like fractions:
864/504 + 49/504 = 864 + 49/504 = 913/504 - So, 12/7 + 7/72 = 913/504
In mixed form: 1409/504
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/7+7/72 12/7+14/72 12/14+7/72 36/7+7/72 12/7+21/72 12/21+7/72 60/7+7/72 12/7+35/72 12/35+7/72 84/7+7/72 12/7+49/72 12/49+7/72