We are given a system of two linear equations with two variables, $x$ and $y$. We need to solve for $x$ and $y$. The system of equations is: $-8x + 4y = 0$ $x + 6y = -13$

AlgebraLinear EquationsSystems of EquationsElimination Method
2025/4/2

1. Problem Description

We are given a system of two linear equations with two variables, xx and yy. We need to solve for xx and yy. The system of equations is:
8x+4y=0-8x + 4y = 0
x+6y=13x + 6y = -13

2. Solution Steps

We can solve this system of equations using either substitution or elimination. Let's use elimination.
First, multiply the second equation by 8 to eliminate xx:
8(x+6y)=8(13)8(x + 6y) = 8(-13)
8x+48y=1048x + 48y = -104
Now we have the two equations:
8x+4y=0-8x + 4y = 0
8x+48y=1048x + 48y = -104
Add the two equations together:
(8x+4y)+(8x+48y)=0+(104)(-8x + 4y) + (8x + 48y) = 0 + (-104)
52y=10452y = -104
Divide both sides by 52:
y=10452y = \frac{-104}{52}
y=2y = -2
Now that we have the value of yy, we can substitute it into either equation to solve for xx. Let's use the second equation:
x+6y=13x + 6y = -13
x+6(2)=13x + 6(-2) = -13
x12=13x - 12 = -13
x=13+12x = -13 + 12
x=1x = -1
So, we have x=1x = -1 and y=2y = -2.

3. Final Answer

x=1x = -1
y=2y = -2
Final Answer: x=1,y=2x = -1, y = -2

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