Add 12/21 and 84/35
1st number: 12/21, 2nd number: 2 14/35
12/21 + 84/35 is 104/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 35 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
12/21 = 12 × 5/21 × 5 = 60/105 - Likewise, for the 2nd fraction, since 35 × 3 = 105,
84/35 = 84 × 3/35 × 3 = 252/105 - Add the two like fractions:
60/105 + 252/105 = 60 + 252/105 = 312/105 - 312/105 simplified gives 104/35
- So, 12/21 + 84/35 = 104/35
In mixed form: 234/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/21+84/35 12/42+84/35 12/21+84/70 36/21+84/35 12/63+84/35 60/21+84/35 84/21+84/35