Final answer:
To solve the equation 5x + 3 = 28, subtract 3 from both sides and then divide by 5 to isolate the variable x.
Step-by-step explanation:
To solve the equation 5x + 3 = 28, you need to isolate the variable x. The first operation you should do is to subtract 3 from both sides of the equation.
5x + 3 - 3 = 28 - 3
5x = 25
Next, divide both sides of the equation by 5 to solve for x.
5x/5 = 25/5
x = 5
So, the solution to the equation 5x + 3 = 28 is x = 5.