We are given a system of two linear equations with two variables, $x$ and $y$: $-5x + y = -7$ $-3x - 2y = -12$ The goal is to solve for $x$ and $y$.
2025/3/10
1. Problem Description
We are given a system of two linear equations with two variables, and :
The goal is to solve for and .
2. Solution Steps
We can use the substitution or elimination method. Let's use the elimination method.
Multiply the first equation by 2:
Now we have:
Add the two equations to eliminate :
Divide by -13:
Now substitute into the first equation :
So the solution is and .
We can verify the solution by plugging and into the second equation:
The equation holds true.