Answers

Subtract 42/63 from 8/9

8/9 - 42/63 is 2/9.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 63 is 63
   
   Next, find the equivalent fraction of both fractional numbers with denominator 63
2. For the 1st fraction, since 9 × 7 = 63,
   8/9 = 8 × 7/9 × 7 = 56/63
3. Likewise, for the 2nd fraction, since 63 × 1 = 63,
   42/63 = 42 × 1/63 × 1 = 42/63
4. Subtract the two like fractions:
   56/63 - 42/63 = 56 - 42/63 = 14/63
5. After reducing the fraction, the answer is 2/9

MathStep (Works offline)

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

Related: ¹⁶/₉-⁴²/₆₃ ⁸/₉-⁸⁴/₆₃ ⁸/₁₈-⁴²/₆₃ ²⁴/₉-⁴²/₆₃ ⁸/₂₇-⁴²/₆₃ ⁴⁰/₉-⁴²/₆₃ ⁸/₄₅-⁴²/₆₃ ⁵⁶/₉-⁴²/₆₃ ⁸/₆₃-⁴²/₆₃

Subtract Fractions Calculator