Subtract 3/5 from 42/63
42/63 - 3/5 is 1/15.
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,
42/63 = 42 × 5/63 × 5 = 210/315 - Likewise, for the 2nd fraction, since 5 × 63 = 315,
3/5 = 3 × 63/5 × 63 = 189/315 - Subtract the two like fractions:
210/315 - 189/315 = 210 - 189/315 = 21/315 - After reducing the fraction, the answer is 1/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/63-3/5 42/63-6/5 42/63-3/10 42/63-9/5 42/63-3/15 42/63-15/5 42/63-3/25 42/63-21/5 42/63-3/35