Add 21/9 and 3/70
1st number: 2 3/9, 2nd number: 3/70
21/9 + 3/70 is 499/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 9 × 70 = 630,
21/9 = 21 × 70/9 × 70 = 1470/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
3/70 = 3 × 9/70 × 9 = 27/630 - Add the two like fractions:
1470/630 + 27/630 = 1470 + 27/630 = 1497/630 - 1497/630 simplified gives 499/210
- So, 21/9 + 3/70 = 499/210
In mixed form: 279/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/9+3/70 21/9+6/70 21/18+3/70 63/9+3/70 21/9+9/70 21/27+3/70 21/9+15/70 21/45+3/70 21/9+21/70 21/63+3/70