Add 15/30 and 9/3
1st number: 15/30, 2nd number: 3 0/3
15/30 + 9/3 is 7/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 3 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
15/30 = 15 × 1/30 × 1 = 15/30 - Likewise, for the 2nd fraction, since 3 × 10 = 30,
9/3 = 9 × 10/3 × 10 = 90/30 - Add the two like fractions:
15/30 + 90/30 = 15 + 90/30 = 105/30 - 105/30 simplified gives 7/2
- So, 15/30 + 9/3 = 7/2
In mixed form: 31/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 15/30+18/3 15/60+9/3 15/30+9/6 45/30+9/3 15/30+27/3 15/90+9/3 75/30+9/3 15/30+45/3 15/30+9/15 15/30+63/3 15/30+9/21