Add 72/12 and 9/7
1st number: 6 0/12, 2nd number: 1 2/7
72/12 + 9/7 is 51/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
72/12 = 72 × 7/12 × 7 = 504/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
9/7 = 9 × 12/7 × 12 = 108/84 - Add the two like fractions:
504/84 + 108/84 = 504 + 108/84 = 612/84 - 612/84 simplified gives 51/7
- So, 72/12 + 9/7 = 51/7
In mixed form: 72/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/12+18/7 72/24+9/7 72/12+9/14 72/12+27/7 72/36+9/7 72/12+9/21 72/12+45/7 72/60+9/7 72/12+9/35 72/12+63/7 72/84+9/7 72/12+9/49