Add 21/70 and 81/14
1st number: 21/70, 2nd number: 5 11/14
21/70 + 81/14 is 213/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 14 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 70 × 1 = 70,
21/70 = 21 × 1/70 × 1 = 21/70 - Likewise, for the 2nd fraction, since 14 × 5 = 70,
81/14 = 81 × 5/14 × 5 = 405/70 - Add the two like fractions:
21/70 + 405/70 = 21 + 405/70 = 426/70 - 426/70 simplified gives 213/35
- So, 21/70 + 81/14 = 213/35
In mixed form: 63/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/70+81/14 21/70+81/28 63/70+81/14 21/70+81/42 21/70+81/70 21/70+81/98