Add 1/9 and 70/72
1/9 + 70/72 is 13/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 9 × 8 = 72,
1/9 = 1 × 8/9 × 8 = 8/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
70/72 = 70 × 1/72 × 1 = 70/72 - Add the two like fractions:
8/72 + 70/72 = 8 + 70/72 = 78/72 - 78/72 simplified gives 13/12
- So, 1/9 + 70/72 = 13/12
In mixed form: 11/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/9+70/72 1/18+70/72 3/9+70/72 1/27+70/72 5/9+70/72 1/45+70/72 7/9+70/72 1/63+70/72