In the conversion process for recurring decimals, what step follows subtracting the two equations?

Disable ads (and more) with a premium pass for a one time $4.99 payment

Prepare for the GCSE Maths Exam with our interactive quizzes. Study with a variety of questions and detailed explanations. Enhance your skills and boost your confidence before the exam day!

To convert a recurring decimal into a fraction, you typically start by letting the decimal be represented as a variable, say ( x ). For example, if we have a recurring decimal like ( 0.666...), we can express it as follows:

  1. ( x = 0.666...)

  2. Multiply both sides of the equation by a power of 10 that aligns with the position of the recurring part. In this case, ( 10x = 6.666...).

  3. Next, subtract the first equation from the second equation:

    ( 10x - x = 6.666... - 0.666...)

Simplifying this yields:

( 9x = 6).

At this stage, the next step involves isolating ( x ). To achieve that, you need to divide both sides of the resulting equation by the difference between the two sides, which in this case is ( 9 ).

This method of subtracting the two equations allows us to eliminate the decimal part, making it easier to form a simple fraction. Therefore, dividing by the difference between both sides is the crucial approach following the subtraction step in the recurring decimal conversion process. This logical progression is

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy