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Solve using substitution: {2x+y=11x−3y=8\begin{cases} 2x + y = 11 \\ x - 3y = 8 \end{cases}{2x+y=11x−3y=8
(5,1)(5, 1)(5,1)
(4,3)(4, 3)(4,3)
(6,−1)(6, -1)(6,−1)
(3,5)(3, 5)(3,5)