Add 14/35 and 28/21
1st number: 14/35, 2nd number: 1 7/21
14/35 + 28/21 is 26/15.
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,
14/35 = 14 × 3/35 × 3 = 42/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
28/21 = 28 × 5/21 × 5 = 140/105 - Add the two like fractions:
42/105 + 140/105 = 42 + 140/105 = 182/105 - 182/105 simplified gives 26/15
- So, 14/35 + 28/21 = 26/15
In mixed form: 111/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/35+28/21 14/35+56/21 14/70+28/21 14/35+28/42 42/35+28/21 14/35+84/21 14/35+28/63 70/35+28/21 98/35+28/21