Add 21/14 and 9/70
1st number: 1 7/14, 2nd number: 9/70
21/14 + 9/70 is 57/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 14 × 5 = 70,
21/14 = 21 × 5/14 × 5 = 105/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
9/70 = 9 × 1/70 × 1 = 9/70 - Add the two like fractions:
105/70 + 9/70 = 105 + 9/70 = 114/70 - 114/70 simplified gives 57/35
- So, 21/14 + 9/70 = 57/35
In mixed form: 122/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/14+9/70 21/14+18/70 21/28+9/70 63/14+9/70 21/14+27/70 21/42+9/70 21/14+45/70 21/70+9/70 21/14+63/70 21/98+9/70