If the ordered pairs (a + 2, 4) and (5, 2a + b) are equal then (a, b) is


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(a + 2, 4), (5, 2a + b)

a + 2 = 5

a = 3

2a + b = 4

6 + b = 4

b = – 2

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a) (2,-2) is the right answer