Add 84/2 and 21/84
1st number: 42 0/2, 2nd number: 21/84
84/2 + 21/84 is 169/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 2 × 42 = 84,
84/2 = 84 × 42/2 × 42 = 3528/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
21/84 = 21 × 1/84 × 1 = 21/84 - Add the two like fractions:
3528/84 + 21/84 = 3528 + 21/84 = 3549/84 - 3549/84 simplified gives 169/4
- So, 84/2 + 21/84 = 169/4
In mixed form: 421/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/2+42/84 84/4+21/84 84/2+63/84 84/6+21/84 84/10+21/84 84/14+21/84