Add 70/9 and 27/20
1st number: 7 7/9, 2nd number: 1 7/20
70/9 + 27/20 is 1643/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 9 × 20 = 180,
70/9 = 70 × 20/9 × 20 = 1400/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
27/20 = 27 × 9/20 × 9 = 243/180 - Add the two like fractions:
1400/180 + 243/180 = 1400 + 243/180 = 1643/180 - So, 70/9 + 27/20 = 1643/180
In mixed form: 923/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/9+54/20 70/18+27/20 70/9+27/40 70/9+81/20 70/27+27/20 70/9+27/60 70/45+27/20 70/63+27/20