Subtract 3/5 from 18/63
18/63 - 3/5 is -11/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 5 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
18/63 = 18 × 5/63 × 5 = 90/315 - Likewise, for the 2nd fraction, since 5 × 63 = 315,
3/5 = 3 × 63/5 × 63 = 189/315 - Subtract the two like fractions:
90/315 - 189/315 = 90 - 189/315 = -99/315 - After reducing the fraction, the answer is -11/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/63-3/5 18/63-6/5 18/63-3/10 54/63-3/5 18/63-9/5 18/63-3/15 90/63-3/5 18/63-15/5 18/63-3/25 18/63-21/5 18/63-3/35