Add 27/30 and 28/20
1st number: 27/30, 2nd number: 1 8/20
27/30 + 28/20 is 23/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
27/30 = 27 × 2/30 × 2 = 54/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
28/20 = 28 × 3/20 × 3 = 84/60 - Add the two like fractions:
54/60 + 84/60 = 54 + 84/60 = 138/60 - 138/60 simplified gives 23/10
- So, 27/30 + 28/20 = 23/10
In mixed form: 23/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/30+28/20 27/30+56/20 27/60+28/20 27/30+28/40 81/30+28/20 27/30+84/20 27/90+28/20 27/30+28/60