Subtract 75/63 from 42/56
1st number: 42/56, 2nd number: 1 12/63
42/56 - 75/63 is -37/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 63 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
42/56 = 42 × 9/56 × 9 = 378/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
75/63 = 75 × 8/63 × 8 = 600/504 - Subtract the two like fractions:
378/504 - 600/504 = 378 - 600/504 = -222/504 - After reducing the fraction, the answer is -37/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/56-75/63