Answers

Subtract 50/60 from 12/21

12/21 - 50/60 is -11/42.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 60 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 21 × 20 = 420,
   12/21 = 12 × 20/21 × 20 = 240/420
3. Likewise, for the 2nd fraction, since 60 × 7 = 420,
   50/60 = 50 × 7/60 × 7 = 350/420
4. Subtract the two like fractions:
   240/420 - 350/420 = 240 - 350/420 = -110/420
5. After reducing the fraction, the answer is -11/42

MathStep (Works offline)

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

Related: ²⁴/₂₁-⁵⁰/₆₀ ¹²/₄₂-⁵⁰/₆₀ ³⁶/₂₁-⁵⁰/₆₀ ¹²/₆₃-⁵⁰/₆₀ ⁶⁰/₂₁-⁵⁰/₆₀ ⁸⁴/₂₁-⁵⁰/₆₀

Subtract Fractions Calculator