Subtract 54/18 from 63/30
1st number: 2 3/30, 2nd number: 3 0/18
63/30 - 54/18 is -9/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
63/30 = 63 × 3/30 × 3 = 189/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
54/18 = 54 × 5/18 × 5 = 270/90 - Subtract the two like fractions:
189/90 - 270/90 = 189 - 270/90 = -81/90 - After reducing the fraction, the answer is -9/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/60-54/18 63/30-54/36 63/90-54/18 63/30-54/90