Add 21/25 and 35/63
21/25 + 35/63 is 314/225.
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,
35/63 = 35 × 25/63 × 25 = 875/1575 - Add the two like fractions:
1323/1575 + 875/1575 = 1323 + 875/1575 = 2198/1575 - 2198/1575 simplified gives 314/225
- So, 21/25 + 35/63 = 314/225
In mixed form: 189/225
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/25+35/63 21/25+70/63 21/50+35/63 63/25+35/63 21/75+35/63