Subtract 3/56 from 42/63
42/63 - 3/56 is 103/168.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 63 × 8 = 504,
42/63 = 42 × 8/63 × 8 = 336/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
3/56 = 3 × 9/56 × 9 = 27/504 - Subtract the two like fractions:
336/504 - 27/504 = 336 - 27/504 = 309/504 - After reducing the fraction, the answer is 103/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/63-3/56 42/63-6/56 42/63-9/56 42/63-15/56 42/63-21/56