Add 28/10 and 6/21
1st number: 2 8/10, 2nd number: 6/21
28/10 + 6/21 is 108/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
28/10 = 28 × 21/10 × 21 = 588/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
6/21 = 6 × 10/21 × 10 = 60/210 - Add the two like fractions:
588/210 + 60/210 = 588 + 60/210 = 648/210 - 648/210 simplified gives 108/35
- So, 28/10 + 6/21 = 108/35
In mixed form: 33/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/10+6/21 28/10+12/21 28/20+6/21 28/10+6/42 84/10+6/21 28/10+18/21 28/30+6/21 28/10+6/63 28/10+30/21 28/50+6/21 28/10+42/21 28/70+6/21