Add 9/7 and 12/72
1st number: 1 2/7, 2nd number: 12/72
9/7 + 12/72 is 61/42.
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,
9/7 = 9 × 72/7 × 72 = 648/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
12/72 = 12 × 7/72 × 7 = 84/504 - Add the two like fractions:
648/504 + 84/504 = 648 + 84/504 = 732/504 - 732/504 simplified gives 61/42
- So, 9/7 + 12/72 = 61/42
In mixed form: 119/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/7+12/72 9/7+24/72 9/14+12/72 27/7+12/72 9/7+36/72 9/21+12/72 45/7+12/72 9/7+60/72 9/35+12/72 63/7+12/72 9/7+84/72 9/49+12/72