Subtract 54/18 from 63/75
1st number: 63/75, 2nd number: 3 0/18
63/75 - 54/18 is -54/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 75 × 6 = 450,
63/75 = 63 × 6/75 × 6 = 378/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
54/18 = 54 × 25/18 × 25 = 1350/450 - Subtract the two like fractions:
378/450 - 1350/450 = 378 - 1350/450 = -972/450 - After reducing the fraction, the answer is -54/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/75-54/36 63/75-54/90