Subtract 24/84 from 21/5
1st number: 4 1/5, 2nd number: 24/84
21/5 - 24/84 is 137/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 5 × 84 = 420,
21/5 = 21 × 84/5 × 84 = 1764/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
24/84 = 24 × 5/84 × 5 = 120/420 - Subtract the two like fractions:
1764/420 - 120/420 = 1764 - 120/420 = 1644/420 - After reducing the fraction, the answer is 137/35
- In mixed form: 332/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/5-24/84 21/5-48/84 21/10-24/84 63/5-24/84 21/5-72/84 21/15-24/84 21/25-24/84 21/35-24/84