Add 80/10 and 6/21
1st number: 8 0/10, 2nd number: 6/21
80/10 + 6/21 is 58/7.
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,
80/10 = 80 × 21/10 × 21 = 1680/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
6/21 = 6 × 10/21 × 10 = 60/210 - Add the two like fractions:
1680/210 + 60/210 = 1680 + 60/210 = 1740/210 - 1740/210 simplified gives 58/7
- So, 80/10 + 6/21 = 58/7
In mixed form: 82/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/10+12/21 80/20+6/21 80/10+6/42 80/10+18/21 80/30+6/21 80/10+6/63 80/10+30/21 80/50+6/21 80/10+42/21 80/70+6/21