Subtract 42/63 from 18/25
18/25 - 42/63 is 4/75.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 63 is 1575
Next, find the equivalent fraction of both fractional numbers with denominator 1575 - For the 1st fraction, since 25 × 63 = 1575,
18/25 = 18 × 63/25 × 63 = 1134/1575 - Likewise, for the 2nd fraction, since 63 × 25 = 1575,
42/63 = 42 × 25/63 × 25 = 1050/1575 - Subtract the two like fractions:
1134/1575 - 1050/1575 = 1134 - 1050/1575 = 84/1575 - After reducing the fraction, the answer is 4/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/25-42/63 18/25-84/63 18/50-42/63 54/25-42/63 18/75-42/63 90/25-42/63