Add 21/3 and 84/6
1st number: 7 0/3, 2nd number: 14 0/6
21/3 + 84/6 is 21/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 6 is 6
Next, find the equivalent fraction of both fractional numbers with denominator 6 - For the 1st fraction, since 3 × 2 = 6,
21/3 = 21 × 2/3 × 2 = 42/6 - Likewise, for the 2nd fraction, since 6 × 1 = 6,
84/6 = 84 × 1/6 × 1 = 84/6 - Add the two like fractions:
42/6 + 84/6 = 42 + 84/6 = 126/6 - 126/6 simplified gives 21/1
- So, 21/3 + 84/6 = 21/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/3+84/6 21/6+84/6 21/3+84/12 63/3+84/6 21/9+84/6 21/3+84/18 21/15+84/6 21/3+84/30 21/3+84/42