Add 35/21 and 3/42
1st number: 1 14/21, 2nd number: 3/42
35/21 + 3/42 is 73/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
35/21 = 35 × 2/21 × 2 = 70/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
3/42 = 3 × 1/42 × 1 = 3/42 - Add the two like fractions:
70/42 + 3/42 = 70 + 3/42 = 73/42 - So, 35/21 + 3/42 = 73/42
In mixed form: 131/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21+3/42 35/21+6/42 35/42+3/42 35/21+3/84 35/21+9/42 35/63+3/42 35/21+15/42 35/21+21/42