Mathematics ACT Aspire Practice Test 2026 – Complete Study Resource

To find the value of x in the equation 5x = 45, we start by isolating x. This involves dividing both sides of the equation by 5.

Doing this, we have:

5x / 5 = 45 / 5

This simplifies to:

x = 9

Thus, the value of x is indeed 9. This tells us that when you multiply 5 by 9, you get back to 45, which verifies our solution. Therefore, the process of dividing both sides by the coefficient of x allows us to determine the value of x correctly and confirms that the answer is 9.