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Write the repeating decimal as a fraction.\newline.788788788.788788788

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Q. Write the repeating decimal as a fraction.\newline.788788788.788788788
  1. Denote Repeating Decimal: Let's denote the repeating decimal 0.7887887880.788788788\ldots as xx.x=0.788788788x = 0.788788788\ldots
  2. Multiply and Isolate Repeating Part: To convert this repeating decimal into a fraction, we first need to isolate the repeating part. To do this, we can multiply xx by 10001000, since the repeating part is three digits long.\newline1000x=788.7887887881000x = 788.788788788\ldots
  3. Subtract and Simplify: Now, we subtract the original xx from 1000x1000x to get rid of the decimal part.\newline1000xx=788.788788788...0.788788788...1000x - x = 788.788788788... - 0.788788788...\newlineThis simplifies to:\newline999x=788999x = 788
  4. Divide to Find Value: To find the value of xx, we divide both sides of the equation by 999999.x=788999x = \frac{788}{999}
  5. Check for Simplification: We can check if the fraction can be simplified by looking for common factors between the numerator and the denominator. In this case, there are no common factors other than 11, so the fraction is already in its simplest form.

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