Answers

Subtract 50/63 from 4/72

4/72 - 50/63 is -31/42.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 63 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 72 × 7 = 504,
   4/72 = 4 × 7/72 × 7 = 28/504
3. Likewise, for the 2nd fraction, since 63 × 8 = 504,
   50/63 = 50 × 8/63 × 8 = 400/504
4. Subtract the two like fractions:
   28/504 - 400/504 = 28 - 400/504 = -372/504
5. After reducing the fraction, the answer is -31/42

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ⁸/₇₂-⁵⁰/₆₃ ¹²/₇₂-⁵⁰/₆₃ ²⁰/₇₂-⁵⁰/₆₃ ²⁸/₇₂-⁵⁰/₆₃

Subtract Fractions Calculator