Add 63/42 and 84/7
1st number: 1 21/42, 2nd number: 12 0/7
63/42 + 84/7 is 27/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 7 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 7 × 6 = 42,
84/7 = 84 × 6/7 × 6 = 504/42 - Add the two like fractions:
63/42 + 504/42 = 63 + 504/42 = 567/42 - 567/42 simplified gives 27/2
- So, 63/42 + 84/7 = 27/2
In mixed form: 131/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/84+84/7 63/42+84/14 63/42+84/21 63/42+84/35 63/42+84/49