Add 84/21 and 10/12
1st number: 4 0/21, 2nd number: 10/12
84/21 + 10/12 is 29/6.
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,
10/12 = 10 × 7/12 × 7 = 70/84 - Add the two like fractions:
336/84 + 70/84 = 336 + 70/84 = 406/84 - 406/84 simplified gives 29/6
- So, 84/21 + 10/12 = 29/6
In mixed form: 45/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/21+20/12 84/42+10/12 84/21+10/24 84/21+30/12 84/63+10/12 84/21+10/36 84/21+50/12 84/21+10/60 84/21+70/12 84/21+10/84