Add 70/72 and 20/9
1st number: 70/72, 2nd number: 2 2/9
70/72 + 20/9 is 115/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 9 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
70/72 = 70 × 1/72 × 1 = 70/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
20/9 = 20 × 8/9 × 8 = 160/72 - Add the two like fractions:
70/72 + 160/72 = 70 + 160/72 = 230/72 - 230/72 simplified gives 115/36
- So, 70/72 + 20/9 = 115/36
In mixed form: 37/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/72+40/9 70/72+20/18 70/72+60/9 70/72+20/27 70/72+20/45 70/72+20/63