Answer :

Answer:

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Step-by-step explanation:

To convert the repeating decimal \( 0.63\overline{3} \) into a rational number, follow these steps:

Let \( x = 0.63\overline{3} \).

Step 1: Identify the repeating part and separate it.

- The repeating part is \( 0.3 \).

Step 2: Multiply \( x \) by 10 to shift the repeating part to the left of the decimal point:

\[

10x = 6.333\overline{3}

\]

Step 3: Subtract the original \( x \) from \( 10x \) to eliminate the repeating part:

\[

10x - x = 6.333\overline{3} - 0.63\overline{3}

\]

\[

9x = 5.7

\]

Step 4: Solve for \( x \):

\[

x = \frac{5.7}{9}

\]

Step 5: Simplify the fraction \( \frac{5.7}{9} \):

\[

x = \frac{57}{90}

\]

Step 6: Further simplify \( \frac{57}{90} \) by dividing numerator and denominator by their greatest common divisor, which is 3:

\[

x = \frac{57 \div 3}{90 \div 3} = \frac{19}{30}

\]

Therefore, the rational representation of the repeating decimal \( 0.63\overline{3} \) is \( \frac{19}{30} \).

Answer:

63/99

Step-by-step explanation:

0.63 bar

let x = 0.63... 1

multiple by 100 on both side

100 x = 63.63....... 2

subtracting 1 from 2

100x-x = 63.63-0.63

99x = 63

x = 63/99

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