What is the value of z in the equation 5z + 3 = 18?

To determine the value of z in the equation (5z + 3 = 18), the first step is to isolate the term containing z. This is done by subtracting 3 from both sides of the equation:

[

5z + 3 - 3 = 18 - 3

]

This simplifies to:

[

5z = 15

]

Next, to solve for z, divide both sides of the equation by 5:

[

z = \frac{15}{5}

]

When you perform the division, you find:

[

z = 3

]

Thus, the value of z is 3, confirming that the answer correctly represents the solution to the equation.