Add 70/7 and 21/9
1st number: 10 0/7, 2nd number: 2 3/9
70/7 + 21/9 is 37/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 7 × 9 = 63,
70/7 = 70 × 9/7 × 9 = 630/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
21/9 = 21 × 7/9 × 7 = 147/63 - Add the two like fractions:
630/63 + 147/63 = 630 + 147/63 = 777/63 - 777/63 simplified gives 37/3
- So, 70/7 + 21/9 = 37/3
In mixed form: 121/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/7+42/9 70/14+21/9 70/7+21/18 70/7+63/9 70/21+21/9 70/7+21/27 70/35+21/9 70/7+21/45 70/49+21/9 70/7+21/63