Subtract 27/25 from 18/63
1st number: 18/63, 2nd number: 1 2/25
18/63 - 27/25 is -139/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 25 is 1575
Next, find the equivalent fraction of both fractional numbers with denominator 1575 - For the 1st fraction, since 63 × 25 = 1575,
18/63 = 18 × 25/63 × 25 = 450/1575 - Likewise, for the 2nd fraction, since 25 × 63 = 1575,
27/25 = 27 × 63/25 × 63 = 1701/1575 - Subtract the two like fractions:
450/1575 - 1701/1575 = 450 - 1701/1575 = -1251/1575 - After reducing the fraction, the answer is -139/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/63-27/25 18/63-54/25 18/63-27/50 54/63-27/25 18/63-81/25 18/63-27/75 90/63-27/25