Add 84/5 and 6/21
1st number: 16 4/5, 2nd number: 6/21
84/5 + 6/21 is 598/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 5 × 21 = 105,
84/5 = 84 × 21/5 × 21 = 1764/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
6/21 = 6 × 5/21 × 5 = 30/105 - Add the two like fractions:
1764/105 + 30/105 = 1764 + 30/105 = 1794/105 - 1794/105 simplified gives 598/35
- So, 84/5 + 6/21 = 598/35
In mixed form: 173/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/5+12/21 84/10+6/21 84/5+6/42 84/5+18/21 84/15+6/21 84/5+6/63 84/5+30/21 84/25+6/21 84/5+42/21 84/35+6/21