Add 21/18 and 84/14
1st number: 1 3/18, 2nd number: 6 0/14
21/18 + 84/14 is 43/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 14 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
21/18 = 21 × 7/18 × 7 = 147/126 - Likewise, for the 2nd fraction, since 14 × 9 = 126,
84/14 = 84 × 9/14 × 9 = 756/126 - Add the two like fractions:
147/126 + 756/126 = 147 + 756/126 = 903/126 - 903/126 simplified gives 43/6
- So, 21/18 + 84/14 = 43/6
In mixed form: 71/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/18+84/14 21/36+84/14 21/18+84/28 63/18+84/14 21/54+84/14 21/18+84/42 21/90+84/14 21/18+84/70 21/18+84/98