Add 8/21 and 5/10
8/21 + 5/10 is 37/42.
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,
5/10 = 5 × 21/10 × 21 = 105/210 - Add the two like fractions:
80/210 + 105/210 = 80 + 105/210 = 185/210 - 185/210 simplified gives 37/42
- So, 8/21 + 5/10 = 37/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/21+5/10 8/42+5/10 8/21+5/20 24/21+5/10 8/21+15/10 8/63+5/10 8/21+5/30 40/21+5/10 8/21+25/10 8/21+5/50 56/21+5/10 8/21+35/10 8/21+5/70