Add 35/3 and 70/21
1st number: 11 2/3, 2nd number: 3 7/21
35/3 + 70/21 is 15/1.
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,
35/3 = 35 × 7/3 × 7 = 245/21 - Likewise, for the 2nd fraction, since 21 × 1 = 21,
70/21 = 70 × 1/21 × 1 = 70/21 - Add the two like fractions:
245/21 + 70/21 = 245 + 70/21 = 315/21 - 315/21 simplified gives 15/1
- So, 35/3 + 70/21 = 15/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/3+70/21 35/6+70/21 35/3+70/42 35/9+70/21 35/3+70/63 35/15+70/21 35/21+70/21