Subtract 40/5 from 84/4
1st number: 21 0/4, 2nd number: 8 0/5
84/4 - 40/5 is 13/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 5 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
84/4 = 84 × 5/4 × 5 = 420/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
40/5 = 40 × 4/5 × 4 = 160/20 - Subtract the two like fractions:
420/20 - 160/20 = 420 - 160/20 = 260/20 - After reducing the fraction, the answer is 13/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/4-80/5 84/8-40/5 84/4-40/10 84/12-40/5 84/4-40/15 84/20-40/5 84/4-40/25 84/28-40/5 84/4-40/35