Add 7/70 and 21/10
1st number: 7/70, 2nd number: 2 1/10
7/70 + 21/10 is 11/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 10 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 70 × 1 = 70,
7/70 = 7 × 1/70 × 1 = 7/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
21/10 = 21 × 7/10 × 7 = 147/70 - Add the two like fractions:
7/70 + 147/70 = 7 + 147/70 = 154/70 - 154/70 simplified gives 11/5
- So, 7/70 + 21/10 = 11/5
In mixed form: 21/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/70+21/10 7/70+42/10 7/70+21/20 21/70+21/10 7/70+63/10 7/70+21/30 35/70+21/10 7/70+21/50 49/70+21/10 7/70+21/70