Add 63/14 and 12/21
1st number: 4 7/14, 2nd number: 12/21
63/14 + 12/21 is 71/14.
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,
12/21 = 12 × 2/21 × 2 = 24/42 - Add the two like fractions:
189/42 + 24/42 = 189 + 24/42 = 213/42 - 213/42 simplified gives 71/14
- So, 63/14 + 12/21 = 71/14
In mixed form: 51/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/14+24/21 63/28+12/21 63/14+12/42 63/14+36/21 63/42+12/21 63/14+12/63 63/14+60/21 63/70+12/21 63/14+84/21 63/98+12/21