Add 80/21 and 1/70
1st number: 3 17/21, 2nd number: 1/70
80/21 + 1/70 is 803/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
80/21 = 80 × 10/21 × 10 = 800/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
1/70 = 1 × 3/70 × 3 = 3/210 - Add the two like fractions:
800/210 + 3/210 = 800 + 3/210 = 803/210 - So, 80/21 + 1/70 = 803/210
In mixed form: 3173/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/21+2/70 80/42+1/70 80/21+3/70 80/63+1/70 80/21+5/70 80/21+7/70