If a student is solving for x in the equation 5x + 20 = 45, what is the value of x?

To find the value of x in the equation 5x + 20 = 45, we first need to isolate the term with x. This is done by subtracting 20 from both sides of the equation, which gives us:

5x + 20 - 20 = 45 - 20

5x = 25

Next, we need to solve for x. Since x is multiplied by 5, we divide both sides of the equation by 5:

5x / 5 = 25 / 5

x = 5

The value of x is therefore 5. This means that when we substitute 5 back into the original equation, we can verify that it satisfies the equation as follows:

5(5) + 20 = 25 + 20 = 45

Thus, the correct choice indicates that x equals 5. This understanding clarifies how we can manipulate equations to isolate variables and solve for unknown values effectively.