Subtract 4/80 from 18/4
1st number: 4 2/4, 2nd number: 4/80
18/4 - 4/80 is 89/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 4 × 20 = 80,
18/4 = 18 × 20/4 × 20 = 360/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
4/80 = 4 × 1/80 × 1 = 4/80 - Subtract the two like fractions:
360/80 - 4/80 = 360 - 4/80 = 356/80 - After reducing the fraction, the answer is 89/20
- In mixed form: 49/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/4-4/80 18/4-8/80 18/8-4/80 54/4-4/80 18/4-12/80 18/12-4/80 90/4-4/80 18/4-20/80 18/20-4/80 18/4-28/80 18/28-4/80