Questions: Which of the following expressions is equivalent to 13x-21 for all numbers x?

Which of the following expressions is equivalent to \(13x - 21\) for all numbers \(x\)?

Step 1: Understand the problem

The problem asks us to identify which expression among the given options is equivalent to \(13x - 21\) for all values of \(x\).

Step 2: Analyze the options

Since no specific options are provided in the question, we cannot directly compare \(13x - 21\) with any alternatives. However, if options were given, we would simplify each option and check if it matches \(13x - 21\).

Step 3: Conclusion

Without specific options, we cannot determine the equivalent expression. If options were provided, the correct answer would be the one that simplifies to \(13x - 21\).

\\(\boxed{\text{No equivalent expression can be determined without specific options.}}\\)

\\(\boxed{\text{No equivalent expression can be determined without specific options.}}\\)