Sorry, doesn't have a unique solution, eg x = 1, y = -1 or x = 2, y = -5 etc
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-4x+3 = 23+6x -4x-6x = 23-3 -10x = 20 x = -2
5+4x-7 = 4x+3-x 4x-2 = 3x+3 4x-3x = 3+2 x = 5
5x + 3 = 4xSubtract 3 from each side:5x = 4x - 3Subtract 4x from each side:x = -3
x2 + 4x + 3 = 0 (x + 1)(x + 3) = 0 x ∈ {-3, -1}
You cannot solve one linear equation with two variables.