Add 63/42 and 81/14
1st number: 1 21/42, 2nd number: 5 11/14
63/42 + 81/14 is 51/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 14 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
63/42 = 63 × 1/42 × 1 = 63/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
81/14 = 81 × 3/14 × 3 = 243/42 - Add the two like fractions:
63/42 + 243/42 = 63 + 243/42 = 306/42 - 306/42 simplified gives 51/7
- So, 63/42 + 81/14 = 51/7
In mixed form: 72/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/84+81/14 63/42+81/28 63/42+81/42 63/42+81/70 63/42+81/98