Solve:

(a)

To consider the system of equations provided, we can manipulate them to find the solution set. The first equation can be rearranged or used as is:

From the second equation, we can also rearrange it for clarity:

First, let’s simplify the second equation by dividing all terms by -2:

Now we have a new system of equations:

Next, we can eliminate by subtracting the second equation from the first:

This simplifies to:

Now, divide both sides by 2:

We can now plug back into one of the original equations to solve for . Using the first equation:

Now, divide both sides by -8:

Thus, the solution to the system of equations is and .

Just remember that when working with systems of equations, keeping variables organized and isolating one variable can simplify the solving process immensely, especially with elimination or substitution methods.