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5. Systems of Linear Equations
5. Systems of Linear Equations / Solving Systems of Linear Equations by Substitution / 문제 4
문제 4

Is the ordered pair (3,1)(3, -1) a solution to the system {2x+y=5x2y=5\(\begin{cases}\)2x+y=5\\ x-2y=5\(\end{cases}\)?