Subtract 84/5 from 45/4
1st number: 11 1/4, 2nd number: 16 4/5
45/4 - 84/5 is -111/20.
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,
45/4 = 45 × 5/4 × 5 = 225/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
84/5 = 84 × 4/5 × 4 = 336/20 - Subtract the two like fractions:
225/20 - 336/20 = 225 - 336/20 = -111/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/4-84/5 45/8-84/5 45/4-84/10 45/12-84/5 45/4-84/15 45/20-84/5 45/4-84/25 45/28-84/5 45/4-84/35