Add 84/12 and 63/84
1st number: 7 0/12, 2nd number: 63/84
84/12 + 63/84 is 31/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
84/12 = 84 × 7/12 × 7 = 588/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
63/84 = 63 × 1/84 × 1 = 63/84 - Add the two like fractions:
588/84 + 63/84 = 588 + 63/84 = 651/84 - 651/84 simplified gives 31/4
- So, 84/12 + 63/84 = 31/4
In mixed form: 73/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/24+63/84 84/36+63/84 84/60+63/84