Subtract 54/90 from 12/20
12/20 - 54/90 is 0/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
12/20 = 12 × 9/20 × 9 = 108/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
54/90 = 54 × 2/90 × 2 = 108/180 - Subtract the two like fractions:
108/180 - 108/180 = 108 - 108/180 = 0/180 - The answer is 0
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/20-54/90 12/40-54/90 36/20-54/90 12/60-54/90 60/20-54/90 84/20-54/90