Add 27/9 and 70/20
1st number: 3 0/9, 2nd number: 3 10/20
27/9 + 70/20 is 13/2.
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,
27/9 = 27 × 20/9 × 20 = 540/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
70/20 = 70 × 9/20 × 9 = 630/180 - Add the two like fractions:
540/180 + 630/180 = 540 + 630/180 = 1170/180 - 1170/180 simplified gives 13/2
- So, 27/9 + 70/20 = 13/2
In mixed form: 61/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/9+70/20 27/18+70/20 27/9+70/40 81/9+70/20 27/9+70/60 27/45+70/20 27/63+70/20