Add 8/35 and 3/21
8/35 + 3/21 is 13/35.
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,
8/35 = 8 × 3/35 × 3 = 24/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
3/21 = 3 × 5/21 × 5 = 15/105 - Add the two like fractions:
24/105 + 15/105 = 24 + 15/105 = 39/105 - 39/105 simplified gives 13/35
- So, 8/35 + 3/21 = 13/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/35+3/21 8/35+6/21 8/70+3/21 8/35+3/42 24/35+3/21 8/35+9/21 8/35+3/63 40/35+3/21 8/35+15/21 56/35+3/21