Add 35/8 and 8/21
1st number: 4 3/8, 2nd number: 8/21
35/8 + 8/21 is 799/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
35/8 = 35 × 21/8 × 21 = 735/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
8/21 = 8 × 8/21 × 8 = 64/168 - Add the two like fractions:
735/168 + 64/168 = 735 + 64/168 = 799/168 - So, 35/8 + 8/21 = 799/168
In mixed form: 4127/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/8+8/21 35/8+16/21 35/16+8/21 35/8+8/42 35/8+24/21 35/24+8/21 35/8+8/63 35/8+40/21 35/40+8/21 35/8+56/21 35/56+8/21