Add 14/21 and 21/63
14/21 + 21/63 is 1/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
14/21 = 14 × 3/21 × 3 = 42/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
21/63 = 21 × 1/63 × 1 = 21/63 - Add the two like fractions:
42/63 + 21/63 = 42 + 21/63 = 63/63 - 63/63 simplified gives 1/1
- So, 14/21 + 21/63 = 1/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/21+21/63 14/21+42/63 14/42+21/63 42/21+21/63 14/63+21/63 70/21+21/63 98/21+21/63