We need to solve the following system of linear equations: $x - 3y = -9$ $4x - 2y = -6$

AlgebraLinear EquationsSystems of EquationsElimination MethodSubstitution
2025/4/23

1. Problem Description

We need to solve the following system of linear equations:
x3y=9x - 3y = -9
4x2y=64x - 2y = -6

2. Solution Steps

We can solve this system of equations using substitution or elimination. Let's use elimination.
First, multiply the first equation by -4:
4(x3y)=4(9)-4(x - 3y) = -4(-9)
4x+12y=36-4x + 12y = 36
Now we have the following system:
4x+12y=36-4x + 12y = 36
4x2y=64x - 2y = -6
Add the two equations together to eliminate xx:
(4x+12y)+(4x2y)=36+(6)(-4x + 12y) + (4x - 2y) = 36 + (-6)
10y=3010y = 30
Now, divide by 10 to solve for yy:
y=3010y = \frac{30}{10}
y=3y = 3
Next, substitute y=3y = 3 into the first original equation to solve for xx:
x3(3)=9x - 3(3) = -9
x9=9x - 9 = -9
x=9+9x = -9 + 9
x=0x = 0

3. Final Answer

The solution to the system of equations is x=0x = 0 and y=3y = 3.
(0,3)(0, 3)

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