Add 72/75 and 7/9
72/75 + 7/9 is 391/225.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 9 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 75 × 3 = 225,
72/75 = 72 × 3/75 × 3 = 216/225 - Likewise, for the 2nd fraction, since 9 × 25 = 225,
7/9 = 7 × 25/9 × 25 = 175/225 - Add the two like fractions:
216/225 + 175/225 = 216 + 175/225 = 391/225 - So, 72/75 + 7/9 = 391/225
In mixed form: 1166/225
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/75+14/9 72/75+7/18 72/75+21/9 72/75+7/27 72/75+35/9 72/75+7/45 72/75+49/9 72/75+7/63