Add 20/24 and 70/9
1st number: 20/24, 2nd number: 7 7/9
20/24 + 70/9 is 155/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 9 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 24 × 3 = 72,
20/24 = 20 × 3/24 × 3 = 60/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
70/9 = 70 × 8/9 × 8 = 560/72 - Add the two like fractions:
60/72 + 560/72 = 60 + 560/72 = 620/72 - 620/72 simplified gives 155/18
- So, 20/24 + 70/9 = 155/18
In mixed form: 811/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/24+70/9 20/48+70/9 20/24+70/18 60/24+70/9 20/72+70/9 20/24+70/27 20/24+70/45 20/24+70/63