Subtract 18/45 from 63/75
63/75 - 18/45 is 11/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 45 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 75 × 3 = 225,
63/75 = 63 × 3/75 × 3 = 189/225 - Likewise, for the 2nd fraction, since 45 × 5 = 225,
18/45 = 18 × 5/45 × 5 = 90/225 - Subtract the two like fractions:
189/225 - 90/225 = 189 - 90/225 = 99/225 - After reducing the fraction, the answer is 11/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/75-36/45 63/75-18/90 63/75-54/45 63/75-90/45