52. \( \left\{\begin{aligned} 2 x+3 y & =4 \\ -x+2 y & =-2\end{aligned}\right. \)
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Bonus Knowledge
To solve the system of equations \[ \begin{aligned} 2 x + 3 y & = 4 \quad (1) \\ -x + 2 y & = -2 \quad (2) \end{aligned} \] we can use substitution or elimination. Here’s a fun approach with elimination: First, let's multiply equation (2) by 2 to align the coefficients of \( x \): \[ \begin{aligned} -2x + 4y & = -4 \quad (3) \\ 2x + 3y & = 4 \quad (1) \end{aligned} \] Now, we can add equations (1) and (3): \[ (2x + 3y) + (-2x + 4y) = 4 + (-4) \] This simplifies to: \[ 7y = 0 \Rightarrow y = 0 \] Now substitute \( y = 0 \) back into equation (1): \[ 2x + 3(0) = 4 \Rightarrow 2x = 4 \Rightarrow x = 2 \] Thus, the solution to the system is \( (x, y) = (2, 0) \). Fun fact: Just like in teamwork, if we work together efficiently (combined strategies), we can solve the problem much quicker!
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