Subtract 56/54 from 18/30
1st number: 18/30, 2nd number: 1 2/54
18/30 - 56/54 is -59/135.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 30 × 9 = 270,
18/30 = 18 × 9/30 × 9 = 162/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
56/54 = 56 × 5/54 × 5 = 280/270 - Subtract the two like fractions:
162/270 - 280/270 = 162 - 280/270 = -118/270 - After reducing the fraction, the answer is -59/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/30-56/54 18/60-56/54 54/30-56/54 18/90-56/54 90/30-56/54