Question

Rewrite as a simplified fraction.0.67 where 7 repeats forever.

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Dec 19,2024

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Answer

\(\frac { 61} { 90} \).

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The Deep Dive

To convert 0.67 (where 7 repeats forever) into a fraction, let's denote it as \( x \): \( x = 0.677777...\) Now, multiply both sides by 10 to shift the decimal point: \( 10x = 6.77777...\) Next, subtract the original equation from this new equation: \( 10x - x = 6.77777... - 0.67777...\) This simplifies to: \( 9x = 6.1\) Now, convert 6.1 into a fraction. Since 6.1 can be written as \( \frac{61}{10} \), we substitute that back in: \( 9x = \frac{61}{10} \) To isolate \( x \), divide both sides by 9: \( x = \frac{61}{90} \) So, the simplified fraction for 0.67 with a repeating 7 is \( \frac{61}{90} \).

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