Samuel is solving an equation for why his first step is to add seven to both sides. Which equation is he solving?

A. 2Y - 15 = 7
B. 2Y + 15 = 7
C. 2Y + 7 = 15
D. 2Y - 7 = 15
Please pick the closest answer.

The correct equation that Samuel is solving is D. 2Y - 7 = 15.

The equation Samuel is solving is D. 2Y - 7 = 15.

Adding seven to both sides will help isolate the variable Y on one side of the equation.

To determine which equation Samuel is solving, we need to look at the step he took. Adding seven to both sides of an equation is a common step in solving linear equations. This step allows us to isolate the variable on one side of the equation.

Let's go through each option to see which one matches Samuel's step:

A. 2Y - 15 = 7
B. 2Y + 15 = 7
C. 2Y + 7 = 15
D. 2Y - 7 = 15

From the given information, Samuel added seven to both sides of the equation. Looking at the options, we can see that only option C matches Samuel's step. Therefore, the equation he is solving is 2Y + 7 = 15.