allerySolving x + y = 5 and x − y = 1 gives:
Ax = 4, y = 1
Bx = 3, y = 2
Cx = 2, y = 3
Dx = 1, y = 4
Answer & Solution
Correct answer: B. x = 3, y = 2
Adding the equations: 2x = 6 ⟹ x = 3; then y = 2.
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