Subtract 56/18 from 54/45
1st number: 1 9/45, 2nd number: 3 2/18
54/45 - 56/18 is -86/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
54/45 = 54 × 2/45 × 2 = 108/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
56/18 = 56 × 5/18 × 5 = 280/90 - Subtract the two like fractions:
108/90 - 280/90 = 108 - 280/90 = -172/90 - After reducing the fraction, the answer is -86/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/90-56/18 54/45-56/36 54/45-56/54 54/45-56/90