Subtract 54/18 from 4/20
1st number: 4/20, 2nd number: 3 0/18
4/20 - 54/18 is -14/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
4/20 = 4 × 9/20 × 9 = 36/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
54/18 = 54 × 10/18 × 10 = 540/180 - Subtract the two like fractions:
36/180 - 540/180 = 36 - 540/180 = -504/180 - After reducing the fraction, the answer is -14/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/20-54/18 4/40-54/18 4/20-54/36 12/20-54/18 4/60-54/18 4/20-54/90 28/20-54/18