Subtract 24/20 from 15/84
1st number: 15/84, 2nd number: 1 4/20
15/84 - 24/20 is -143/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
15/84 = 15 × 5/84 × 5 = 75/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
24/20 = 24 × 21/20 × 21 = 504/420 - Subtract the two like fractions:
75/420 - 504/420 = 75 - 504/420 = -429/420 - After reducing the fraction, the answer is -143/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/84-24/20 15/84-48/20 15/84-24/40 45/84-24/20 15/84-72/20 15/84-24/60 75/84-24/20