Add 8/84 and 84/12
1st number: 8/84, 2nd number: 7 0/12
8/84 + 84/12 is 149/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
8/84 = 8 × 1/84 × 1 = 8/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
84/12 = 84 × 7/12 × 7 = 588/84 - Add the two like fractions:
8/84 + 588/84 = 8 + 588/84 = 596/84 - 596/84 simplified gives 149/21
- So, 8/84 + 84/12 = 149/21
In mixed form: 72/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/84+84/12 8/84+84/24 24/84+84/12 8/84+84/36 40/84+84/12 8/84+84/60 56/84+84/12