Add 63/21 and 4/84
1st number: 3 0/21, 2nd number: 4/84
63/21 + 4/84 is 64/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
63/21 = 63 × 4/21 × 4 = 252/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
4/84 = 4 × 1/84 × 1 = 4/84 - Add the two like fractions:
252/84 + 4/84 = 252 + 4/84 = 256/84 - 256/84 simplified gives 64/21
- So, 63/21 + 4/84 = 64/21
In mixed form: 31/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/21+8/84 63/42+4/84 63/21+12/84 63/21+20/84 63/21+28/84