Answers

Subtract 9/7 from 24/72

1^st number: 24/72, 2^nd number: 1 2/7

24/72 - 9/7 is -20/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 7 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 72 × 7 = 504,
   24/72 = 24 × 7/72 × 7 = 168/504
3. Likewise, for the 2nd fraction, since 7 × 72 = 504,
   9/7 = 9 × 72/7 × 72 = 648/504
4. Subtract the two like fractions:
   168/504 - 648/504 = 168 - 648/504 = -480/504
5. After reducing the fraction, the answer is -20/21

MathStep (Works offline)

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

Related: ⁴⁸/₇₂-⁹/₇ ²⁴/₇₂-¹⁸/₇ ²⁴/₇₂-⁹/₁₄ ²⁴/₇₂-²⁷/₇ ²⁴/₇₂-⁹/₂₁ ²⁴/₇₂-⁴⁵/₇ ²⁴/₇₂-⁹/₃₅ ²⁴/₇₂-⁶³/₇ ²⁴/₇₂-⁹/₄₉

Subtract Fractions Calculator