Subtract 20/80 from 4/2
1st number: 2 0/2, 2nd number: 20/80
4/2 - 20/80 is 7/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 2 × 40 = 80,
4/2 = 4 × 40/2 × 40 = 160/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
20/80 = 20 × 1/80 × 1 = 20/80 - Subtract the two like fractions:
160/80 - 20/80 = 160 - 20/80 = 140/80 - After reducing the fraction, the answer is 7/4
- In mixed form: 13/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/2-20/80 4/2-40/80 12/2-20/80 4/2-60/80 4/6-20/80 20/2-20/80 4/10-20/80 28/2-20/80 4/14-20/80