Add 7/35 and 1/21
7/35 + 1/21 is 26/105.
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,
7/35 = 7 × 3/35 × 3 = 21/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
1/21 = 1 × 5/21 × 5 = 5/105 - Add the two like fractions:
21/105 + 5/105 = 21 + 5/105 = 26/105 - So, 7/35 + 1/21 = 26/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/35+1/21 7/35+2/21 7/70+1/21 7/35+1/42 21/35+1/21 7/35+3/21 7/35+1/63 7/35+5/21 49/35+1/21 7/35+7/21