Add 35/21 and 1/12
1st number: 1 14/21, 2nd number: 1/12
35/21 + 1/12 is 7/4.
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,
35/21 = 35 × 4/21 × 4 = 140/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
1/12 = 1 × 7/12 × 7 = 7/84 - Add the two like fractions:
140/84 + 7/84 = 140 + 7/84 = 147/84 - 147/84 simplified gives 7/4
- So, 35/21 + 1/12 = 7/4
In mixed form: 13/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21+1/12 35/21+2/12 35/42+1/12 35/21+1/24 35/21+3/12 35/63+1/12 35/21+1/36 35/21+5/12 35/21+1/60 35/21+7/12 35/21+1/84