Question 1 • Mathematics I
Adding the equivalent equations, 4x − 4y = 12 and 4x + 4y = 28, cancels the y-terms and gives 8x = 40, so x = 5. Substitute x = 5 into 4x + 4y = 28: 20 + 4y = 28, so y = 2. The solution is (5, 2), choice B.
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