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