Subtract 90/4 from 54/20
1st number: 2 14/20, 2nd number: 22 2/4
54/20 - 90/4 is -99/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 4 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
54/20 = 54 × 1/20 × 1 = 54/20 - Likewise, for the 2nd fraction, since 4 × 5 = 20,
90/4 = 90 × 5/4 × 5 = 450/20 - Subtract the two like fractions:
54/20 - 450/20 = 54 - 450/20 = -396/20 - After reducing the fraction, the answer is -99/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/40-90/4 54/20-90/8 54/60-90/4 54/20-90/12 54/20-90/20 54/20-90/28