Add 56/21 and 84/5
1st number: 2 14/21, 2nd number: 16 4/5
56/21 + 84/5 is 292/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 5 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
56/21 = 56 × 5/21 × 5 = 280/105 - Likewise, for the 2nd fraction, since 5 × 21 = 105,
84/5 = 84 × 21/5 × 21 = 1764/105 - Add the two like fractions:
280/105 + 1764/105 = 280 + 1764/105 = 2044/105 - 2044/105 simplified gives 292/15
- So, 56/21 + 84/5 = 292/15
In mixed form: 197/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/42+84/5 56/21+84/10 56/63+84/5 56/21+84/15 56/21+84/25 56/21+84/35