Subtract 18/20 from 18/6
1st number: 3 0/6, 2nd number: 18/20
18/6 - 18/20 is 21/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 6 × 10 = 60,
18/6 = 18 × 10/6 × 10 = 180/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
18/20 = 18 × 3/20 × 3 = 54/60 - Subtract the two like fractions:
180/60 - 54/60 = 180 - 54/60 = 126/60 - After reducing the fraction, the answer is 21/10
- In mixed form: 21/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/6-18/20 18/6-36/20 18/12-18/20 18/6-18/40 54/6-18/20 18/6-54/20 18/6-18/60 90/6-18/20 18/6-90/20 18/30-18/20 18/42-18/20