Add 84/21 and 49/12
1st number: 4 0/21, 2nd number: 4 1/12
84/21 + 49/12 is 97/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
84/21 = 84 × 4/21 × 4 = 336/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
49/12 = 49 × 7/12 × 7 = 343/84 - Add the two like fractions:
336/84 + 343/84 = 336 + 343/84 = 679/84 - 679/84 simplified gives 97/12
- So, 84/21 + 49/12 = 97/12
In mixed form: 81/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/21+98/12 84/42+49/12 84/21+49/24 84/63+49/12 84/21+49/36 84/21+49/60 84/21+49/84