Answer:

Explanation:
Not sure I understand that part of your question ...not separate, the xy for both combined.
Here are the solution steps to determine x and y values
Given equations are
![\begin{amatrix}x-2y=-13 \dots [1] \\\\ y=-2x-6\dots\dots[2]\end{amatrix}](https://img.qammunity.org/2024/formulas/mathematics/high-school/fa98ndmuu03xu1tw8iptp2incb1kdaxod1.png)
In equation [2] get all the variables to the left side and the constant on ther right side:
- Add 2x to both sides of the equation:

- Simplify:

- Rewrite:
![2x+y=-6\dots\dots [3]](https://img.qammunity.org/2024/formulas/mathematics/high-school/fzsk05l5t273woxnwdreoi975zlznf56wp.png)
Let's examine equations [1] and [3]:
![\begin{aligned}x - 2y &= - 13 \dots [1]\\ 2x + y &= -6\;\;\dots[3]\\\end{aligned}](https://img.qammunity.org/2024/formulas/mathematics/high-school/l900pht70liwzas9j495uxqy4n5p1tg4uu.png)
Multiply eq [1],
throughout by
:
![2(x - 2y) &= 2(- 13) \implies 2x - 4y = -26 \dots[4]\\](https://img.qammunity.org/2024/formulas/mathematics/high-school/6eno0u33npdnsxw190jert4y0f37x59db1.png)
Subtract the equations:

:
