Add 84/5 and 16/21
1st number: 16 4/5, 2nd number: 16/21
84/5 + 16/21 is 1844/105.
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,
16/21 = 16 × 5/21 × 5 = 80/105 - Add the two like fractions:
1764/105 + 80/105 = 1764 + 80/105 = 1844/105 - So, 84/5 + 16/21 = 1844/105
In mixed form: 1759/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/5+32/21 84/10+16/21 84/5+16/42 84/5+48/21 84/15+16/21 84/5+16/63 84/5+80/21 84/25+16/21 84/35+16/21