Subtract 20/5 from 84/24
1st number: 3 12/24, 2nd number: 4 0/5
84/24 - 20/5 is -1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 5 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 24 × 5 = 120,
84/24 = 84 × 5/24 × 5 = 420/120 - Likewise, for the 2nd fraction, since 5 × 24 = 120,
20/5 = 20 × 24/5 × 24 = 480/120 - Subtract the two like fractions:
420/120 - 480/120 = 420 - 480/120 = -60/120 - After reducing the fraction, the answer is -1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/24-40/5 84/48-20/5 84/24-20/10 84/24-60/5 84/72-20/5 84/24-20/15 84/24-20/25 84/24-20/35