Subtract 42/15 from 4/63
1st number: 4/63, 2nd number: 2 12/15
4/63 - 42/15 is -862/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 15 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
4/63 = 4 × 5/63 × 5 = 20/315 - Likewise, for the 2nd fraction, since 15 × 21 = 315,
42/15 = 42 × 21/15 × 21 = 882/315 - Subtract the two like fractions:
20/315 - 882/315 = 20 - 882/315 = -862/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/63-42/15 4/63-84/15 4/63-42/30 12/63-42/15 4/63-42/45 20/63-42/15 4/63-42/75 28/63-42/15