Subtract 18/10 from 1/20
1st number: 1/20, 2nd number: 1 8/10
1/20 - 18/10 is -7/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
1/20 = 1 × 1/20 × 1 = 1/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
18/10 = 18 × 2/10 × 2 = 36/20 - Subtract the two like fractions:
1/20 - 36/20 = 1 - 36/20 = -35/20 - After reducing the fraction, the answer is -7/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/20-18/10 1/20-36/10 1/40-18/10 1/20-18/20 3/20-18/10 1/20-54/10 1/60-18/10 1/20-18/30 5/20-18/10 1/20-90/10 1/20-18/50 7/20-18/10 1/20-18/70