Practice Police Entry Practice Test

To find the solution to the equation 3y + 7 = 28, the primary goal is to isolate the variable y. The first step involves subtracting 7 from both sides of the equation, which simplifies it to 3y = 21. This manipulation is crucial because it allows us to eliminate the constant term that is added to the variable.

Next, to solve for y, we need to divide both sides of the equation by 3. This division gives us y = 7. Thus, the value of y that satisfies the equation is 7.

This process illustrates the importance of isolating the variable step-by-step, ensuring that each operation maintains the equality of the equation. The steps taken ensure that all parts of the equation are balanced, leading to a correct and clear solution.