Add 2/21 and 2/8
2/21 + 2/8 is 29/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
2/21 = 2 × 8/21 × 8 = 16/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
2/8 = 2 × 21/8 × 21 = 42/168 - Add the two like fractions:
16/168 + 42/168 = 16 + 42/168 = 58/168 - 58/168 simplified gives 29/84
- So, 2/21 + 2/8 = 29/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/21+2/8 2/21+4/8 2/42+2/8 2/21+2/16 6/21+2/8 2/21+6/8 2/63+2/8 2/21+2/24 10/21+2/8 2/21+10/8 2/21+2/40 14/21+2/8 2/21+14/8 2/21+2/56