Add 8/21 and 30/10
1st number: 8/21, 2nd number: 3 0/10
8/21 + 30/10 is 71/21.
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,
30/10 = 30 × 21/10 × 21 = 630/210 - Add the two like fractions:
80/210 + 630/210 = 80 + 630/210 = 710/210 - 710/210 simplified gives 71/21
- So, 8/21 + 30/10 = 71/21
In mixed form: 38/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/21+30/10 8/21+60/10 8/42+30/10 8/21+30/20 24/21+30/10 8/21+90/10 8/63+30/10 40/21+30/10 8/21+30/50 56/21+30/10 8/21+30/70