Add 3/35 and 63/21
1st number: 3/35, 2nd number: 3 0/21
3/35 + 63/21 is 108/35.
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,
3/35 = 3 × 3/35 × 3 = 9/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
63/21 = 63 × 5/21 × 5 = 315/105 - Add the two like fractions:
9/105 + 315/105 = 9 + 315/105 = 324/105 - 324/105 simplified gives 108/35
- So, 3/35 + 63/21 = 108/35
In mixed form: 33/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/35+63/21 3/70+63/21 3/35+63/42 9/35+63/21 15/35+63/21 21/35+63/21