Add 15/30 and 18/3
1st number: 15/30, 2nd number: 6 0/3
15/30 + 18/3 is 13/2.
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,
18/3 = 18 × 10/3 × 10 = 180/30 - Add the two like fractions:
15/30 + 180/30 = 15 + 180/30 = 195/30 - 195/30 simplified gives 13/2
- So, 15/30 + 18/3 = 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: 15/30+36/3 15/60+18/3 15/30+18/6 45/30+18/3 15/30+54/3 15/90+18/3 15/30+18/9 75/30+18/3 15/30+90/3 15/30+18/15 15/30+18/21