Subtract 20/24 from 80/84
80/84 - 20/24 is 5/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 84 × 2 = 168,
80/84 = 80 × 2/84 × 2 = 160/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
20/24 = 20 × 7/24 × 7 = 140/168 - Subtract the two like fractions:
160/168 - 140/168 = 160 - 140/168 = 20/168 - After reducing the fraction, the answer is 5/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/84-40/24 80/84-20/48 80/84-60/24 80/84-20/72