Subtract 16/20 from 18/4
1st number: 4 2/4, 2nd number: 16/20
18/4 - 16/20 is 37/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
18/4 = 18 × 5/4 × 5 = 90/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
16/20 = 16 × 1/20 × 1 = 16/20 - Subtract the two like fractions:
90/20 - 16/20 = 90 - 16/20 = 74/20 - After reducing the fraction, the answer is 37/10
- In mixed form: 37/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/4-16/20 18/4-32/20 18/8-16/20 18/4-16/40 54/4-16/20 18/4-48/20 18/12-16/20 18/4-16/60 90/4-16/20 18/4-80/20 18/20-16/20 18/28-16/20