Add 18/84 and 63/7
1st number: 18/84, 2nd number: 9 0/7
18/84 + 63/7 is 129/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
18/84 = 18 × 1/84 × 1 = 18/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
63/7 = 63 × 12/7 × 12 = 756/84 - Add the two like fractions:
18/84 + 756/84 = 18 + 756/84 = 774/84 - 774/84 simplified gives 129/14
- So, 18/84 + 63/7 = 129/14
In mixed form: 93/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/84+63/7 18/84+63/14 54/84+63/7 18/84+63/21 90/84+63/7 18/84+63/35 18/84+63/49