To convert the decimal -0.21 into a fraction, follow these steps:

  1. Understand the decimal: The decimal -0.21 can be read as 'negative twenty-one hundredths'. This means we need to express the number 0.21 as a fraction first and then consider the negative sign.
  2. Write the decimal as a fraction: The decimal 0.21 can be written as:
  3. 0.21 = 21/100

  4. Add the negative sign: Since our original decimal is -0.21, we will include the negative sign in front of our fraction. Thus:
  5. -0.21 = -21/100

  6. Final answer: The fraction for -0.21 is:
  7. -21/100

In conclusion, -0.21 can be expressed as the fraction -21/100.


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