Add 8/5 and 21/63
1st number: 1 3/5, 2nd number: 21/63
8/5 + 21/63 is 29/15.
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,
8/5 = 8 × 63/5 × 63 = 504/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
21/63 = 21 × 5/63 × 5 = 105/315 - Add the two like fractions:
504/315 + 105/315 = 504 + 105/315 = 609/315 - 609/315 simplified gives 29/15
- So, 8/5 + 21/63 = 29/15
In mixed form: 114/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/5+21/63 8/5+42/63 8/10+21/63 24/5+21/63 8/15+21/63 40/5+21/63 8/25+21/63 56/5+21/63 8/35+21/63