Add 6/35 and 42/21
1st number: 6/35, 2nd number: 2 0/21
6/35 + 42/21 is 76/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 35 × 3 = 105,
6/35 = 6 × 3/35 × 3 = 18/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
42/21 = 42 × 5/21 × 5 = 210/105 - Add the two like fractions:
18/105 + 210/105 = 18 + 210/105 = 228/105 - 228/105 simplified gives 76/35
- So, 6/35 + 42/21 = 76/35
In mixed form: 26/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/35+42/21 6/35+84/21 6/70+42/21 18/35+42/21 6/35+42/63 30/35+42/21 42/35+42/21