Which is the contrapositive of p → q?

A conditional p → q has contrapositive ¬q → ¬p: reverse the two statements and negate each one. Here, p is “3x + 7 = −5” and q is “4x + 12 = −4,” so the contrapositive is “If 4x + 12 ≠ −4, then 3x + 7 ≠ −5.” That is choice D.

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