Subtract 90/63 from 3/75
1st number: 3/75, 2nd number: 1 27/63
3/75 - 90/63 is -243/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 63 is 1575
Next, find the equivalent fraction of both fractional numbers with denominator 1575 - For the 1st fraction, since 75 × 21 = 1575,
3/75 = 3 × 21/75 × 21 = 63/1575 - Likewise, for the 2nd fraction, since 63 × 25 = 1575,
90/63 = 90 × 25/63 × 25 = 2250/1575 - Subtract the two like fractions:
63/1575 - 2250/1575 = 63 - 2250/1575 = -2187/1575 - After reducing the fraction, the answer is -243/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/75-90/63 9/75-90/63 15/75-90/63 21/75-90/63