Add 21/25 and 4/63
21/25 + 4/63 is 1423/1575.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 63 is 1575
Next, find the equivalent fraction of both fractional numbers with denominator 1575 - For the 1st fraction, since 25 × 63 = 1575,
21/25 = 21 × 63/25 × 63 = 1323/1575 - Likewise, for the 2nd fraction, since 63 × 25 = 1575,
4/63 = 4 × 25/63 × 25 = 100/1575 - Add the two like fractions:
1323/1575 + 100/1575 = 1323 + 100/1575 = 1423/1575 - So, 21/25 + 4/63 = 1423/1575
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/25+4/63 21/25+8/63 21/50+4/63 63/25+4/63 21/25+12/63 21/75+4/63 21/25+20/63 21/25+28/63