Add 15/5 and 63/18
1st number: 3 0/5, 2nd number: 3 9/18
15/5 + 63/18 is 13/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 5 × 18 = 90,
15/5 = 15 × 18/5 × 18 = 270/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
63/18 = 63 × 5/18 × 5 = 315/90 - Add the two like fractions:
270/90 + 315/90 = 270 + 315/90 = 585/90 - 585/90 simplified gives 13/2
- So, 15/5 + 63/18 = 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: 30/5+63/18 15/10+63/18 15/5+63/36 45/5+63/18 15/5+63/54 75/5+63/18 15/25+63/18 15/5+63/90 15/35+63/18