Solve \[ \begin{array}{l}-4 x-10 y=-2 \\ -4 x-6 y=2\end{array} \]
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Bonus Knowledge
To solve the system of equations \[ \begin{array}{l} -4x -10y = -2 \quad (1)\\ -4x -6y = 2 \quad (2) \end{array} \] we can start by eliminating one variable. We can do this by subtracting equation (2) from equation (1). Starting with: \[ (-4x - 10y) - (-4x - 6y) = -2 - 2 \] This simplifies to: \[ -4y = -4 \] Dividing both sides by -4 gives us: \[ y = 1 \] Now we can substitute \(y = 1\) back into either original equation; let's use equation (2): \[ -4x - 6(1) = 2 \] This simplifies to: \[ -4x - 6 = 2 \] Adding 6 to both sides gives: \[ -4x = 8 \] Dividing both sides by -4 results in: \[ x = -2 \] Thus, the solution to the system of equations is: \[ (x, y) = (-2, 1) \]
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