Subtract 24/20 from 2/21
1st number: 2/21, 2nd number: 1 4/20
2/21 - 24/20 is -116/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
2/21 = 2 × 20/21 × 20 = 40/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
24/20 = 24 × 21/20 × 21 = 504/420 - Subtract the two like fractions:
40/420 - 504/420 = 40 - 504/420 = -464/420 - After reducing the fraction, the answer is -116/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/21-24/20 2/21-48/20 2/42-24/20 2/21-24/40 6/21-24/20 2/21-72/20 2/63-24/20 2/21-24/60 10/21-24/20 14/21-24/20