Add 1/4 and 63/21
1st number: 1/4, 2nd number: 3 0/21
1/4 + 63/21 is 13/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
1/4 = 1 × 21/4 × 21 = 21/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
63/21 = 63 × 4/21 × 4 = 252/84 - Add the two like fractions:
21/84 + 252/84 = 21 + 252/84 = 273/84 - 273/84 simplified gives 13/4
- So, 1/4 + 63/21 = 13/4
In mixed form: 31/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/4+63/21 1/8+63/21 1/4+63/42 3/4+63/21 1/12+63/21 5/4+63/21 1/20+63/21 7/4+63/21 1/28+63/21