Add 63/14 and 27/21
1st number: 4 7/14, 2nd number: 1 6/21
63/14 + 27/21 is 81/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
63/14 = 63 × 3/14 × 3 = 189/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
27/21 = 27 × 2/21 × 2 = 54/42 - Add the two like fractions:
189/42 + 54/42 = 189 + 54/42 = 243/42 - 243/42 simplified gives 81/14
- So, 63/14 + 27/21 = 81/14
In mixed form: 511/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/14+54/21 63/28+27/21 63/14+27/42 63/14+81/21 63/42+27/21 63/14+27/63 63/70+27/21 63/98+27/21