Answers

Subtract 60/84 from 10/21

10/21 - 60/84 is -5/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 84 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 21 × 4 = 84,
   10/21 = 10 × 4/21 × 4 = 40/84
3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
   60/84 = 60 × 1/84 × 1 = 60/84
4. Subtract the two like fractions:
   40/84 - 60/84 = 40 - 60/84 = -20/84
5. After reducing the fraction, the answer is -5/21

MathStep (Works offline)

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

Related: ²⁰/₂₁-⁶⁰/₈₄ ¹⁰/₄₂-⁶⁰/₈₄ ³⁰/₂₁-⁶⁰/₈₄ ¹⁰/₆₃-⁶⁰/₈₄ ⁵⁰/₂₁-⁶⁰/₈₄ ⁷⁰/₂₁-⁶⁰/₈₄

Subtract Fractions Calculator