Subtract 25/49 from 18/63
18/63 - 25/49 is -11/49.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 49 is 441
Next, find the equivalent fraction of both fractional numbers with denominator 441 - For the 1st fraction, since 63 × 7 = 441,
18/63 = 18 × 7/63 × 7 = 126/441 - Likewise, for the 2nd fraction, since 49 × 9 = 441,
25/49 = 25 × 9/49 × 9 = 225/441 - Subtract the two like fractions:
126/441 - 225/441 = 126 - 225/441 = -99/441 - After reducing the fraction, the answer is -11/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/63-25/49 18/63-50/49 18/63-25/98 54/63-25/49 18/63-75/49 90/63-25/49