Add 63/35 and 5/21
1st number: 1 28/35, 2nd number: 5/21
63/35 + 5/21 is 214/105.
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,
63/35 = 63 × 3/35 × 3 = 189/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
5/21 = 5 × 5/21 × 5 = 25/105 - Add the two like fractions:
189/105 + 25/105 = 189 + 25/105 = 214/105 - So, 63/35 + 5/21 = 214/105
In mixed form: 24/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/35+10/21 63/70+5/21 63/35+5/42 63/35+15/21 63/35+5/63 63/35+25/21 63/35+35/21