Subtract 3/21 from 84/5
1st number: 16 4/5, 2nd number: 3/21
84/5 - 3/21 is 583/35.
Steps for subtracting 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,
3/21 = 3 × 5/21 × 5 = 15/105 - Subtract the two like fractions:
1764/105 - 15/105 = 1764 - 15/105 = 1749/105 - After reducing the fraction, the answer is 583/35
- In mixed form: 1623/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/5-6/21 84/10-3/21 84/5-3/42 84/5-9/21 84/15-3/21 84/5-3/63 84/5-15/21 84/25-3/21 84/35-3/21