Add 8/21 and 2/10
8/21 + 2/10 is 61/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
8/21 = 8 × 10/21 × 10 = 80/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
2/10 = 2 × 21/10 × 21 = 42/210 - Add the two like fractions:
80/210 + 42/210 = 80 + 42/210 = 122/210 - 122/210 simplified gives 61/105
- So, 8/21 + 2/10 = 61/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/21+2/10 8/21+4/10 8/42+2/10 8/21+2/20 24/21+2/10 8/21+6/10 8/63+2/10 8/21+2/30 40/21+2/10 8/21+2/50 56/21+2/10 8/21+14/10 8/21+2/70