Add 15/5 and 42/63
1st number: 3 0/5, 2nd number: 42/63
15/5 + 42/63 is 11/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 5 × 63 = 315,
15/5 = 15 × 63/5 × 63 = 945/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
42/63 = 42 × 5/63 × 5 = 210/315 - Add the two like fractions:
945/315 + 210/315 = 945 + 210/315 = 1155/315 - 1155/315 simplified gives 11/3
- So, 15/5 + 42/63 = 11/3
In mixed form: 32/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/5+42/63 15/5+84/63 15/10+42/63 45/5+42/63 75/5+42/63 15/25+42/63 15/35+42/63