Add 28/20 and 9/30
1st number: 1 8/20, 2nd number: 9/30
28/20 + 9/30 is 17/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
28/20 = 28 × 3/20 × 3 = 84/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
9/30 = 9 × 2/30 × 2 = 18/60 - Add the two like fractions:
84/60 + 18/60 = 84 + 18/60 = 102/60 - 102/60 simplified gives 17/10
- So, 28/20 + 9/30 = 17/10
In mixed form: 17/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/20+9/30 28/20+18/30 28/40+9/30 28/20+9/60 84/20+9/30 28/20+27/30 28/60+9/30 28/20+9/90 28/20+45/30 28/20+63/30