Add 70/3 and 3/21
1st number: 23 1/3, 2nd number: 3/21
70/3 + 3/21 is 493/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
70/3 = 70 × 7/3 × 7 = 490/21 - Likewise, for the 2nd fraction, since 21 × 1 = 21,
3/21 = 3 × 1/21 × 1 = 3/21 - Add the two like fractions:
490/21 + 3/21 = 490 + 3/21 = 493/21 - So, 70/3 + 3/21 = 493/21
In mixed form: 2310/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/3+6/21 70/6+3/21 70/3+3/42 70/3+9/21 70/9+3/21 70/3+3/63 70/3+15/21 70/15+3/21 70/21+3/21