We are given a system of two linear equations with two variables, $x$ and $y$: $x + 2y = 1$ $2x + 3y = 4$ We need to find the values of $x$ and $y$ that satisfy both equations.

AlgebraLinear EquationsSystems of EquationsElimination MethodSolution
2025/6/26

1. Problem Description

We are given a system of two linear equations with two variables, xx and yy:
x+2y=1x + 2y = 1
2x+3y=42x + 3y = 4
We need to find the values of xx and yy that satisfy both equations.

2. Solution Steps

We can use the substitution or elimination method to solve this system. Let's use the elimination method.
Multiply the first equation by -2 to eliminate xx:
2(x+2y)=2(1)-2(x + 2y) = -2(1)
2x4y=2-2x - 4y = -2
Now we have the following system:
2x4y=2-2x - 4y = -2
2x+3y=42x + 3y = 4
Add the two equations together:
(2x4y)+(2x+3y)=2+4(-2x - 4y) + (2x + 3y) = -2 + 4
y=2-y = 2
y=2y = -2
Now, substitute y=2y = -2 into the first equation x+2y=1x + 2y = 1:
x+2(2)=1x + 2(-2) = 1
x4=1x - 4 = 1
x=1+4x = 1 + 4
x=5x = 5
So the solution is x=5x = 5 and y=2y = -2.

3. Final Answer

The solution is x=5x = 5 and y=2y = -2.

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