Add 15/63 and 21/5
1st number: 15/63, 2nd number: 4 1/5
15/63 + 21/5 is 466/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 5 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
15/63 = 15 × 5/63 × 5 = 75/315 - Likewise, for the 2nd fraction, since 5 × 63 = 315,
21/5 = 21 × 63/5 × 63 = 1323/315 - Add the two like fractions:
75/315 + 1323/315 = 75 + 1323/315 = 1398/315 - 1398/315 simplified gives 466/105
- So, 15/63 + 21/5 = 466/105
In mixed form: 446/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/63+21/5 15/63+42/5 15/63+21/10 45/63+21/5 15/63+63/5 15/63+21/15 75/63+21/5 15/63+21/25 15/63+21/35