The problem is to solve the system of linear equations: $-4x + 3y = -9$ $3x - 2y = 8$

AlgebraLinear EquationsSystem of EquationsElimination Method
2025/5/19

1. Problem Description

The problem is to solve the system of linear equations:
4x+3y=9-4x + 3y = -9
3x2y=83x - 2y = 8

2. Solution Steps

We can use the elimination method. To eliminate xx, we multiply the first equation by 3 and the second equation by 4:
3(4x+3y)=3(9)3(-4x + 3y) = 3(-9)
4(3x2y)=4(8)4(3x - 2y) = 4(8)
This simplifies to:
12x+9y=27-12x + 9y = -27
12x8y=3212x - 8y = 32
Now, add the two equations:
(12x+9y)+(12x8y)=27+32(-12x + 9y) + (12x - 8y) = -27 + 32
12x+12x+9y8y=5-12x + 12x + 9y - 8y = 5
y=5y = 5
Now that we have yy, substitute it into either of the original equations to solve for xx. We can use the second equation:
3x2y=83x - 2y = 8
3x2(5)=83x - 2(5) = 8
3x10=83x - 10 = 8
3x=183x = 18
x=6x = 6
So the solution is x=6x=6 and y=5y=5.

3. Final Answer

(6, 5)

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