Add 70/3 and 20/7
1st number: 23 1/3, 2nd number: 2 6/7
70/3 + 20/7 is 550/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 7 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 7 × 3 = 21,
20/7 = 20 × 3/7 × 3 = 60/21 - Add the two like fractions:
490/21 + 60/21 = 490 + 60/21 = 550/21 - So, 70/3 + 20/7 = 550/21
In mixed form: 264/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/3+40/7 70/6+20/7 70/3+20/14 70/3+60/7 70/9+20/7 70/3+20/21 70/15+20/7 70/3+20/35 70/21+20/7 70/3+20/49