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Which of these equations is true when x = 3?

A4x - 5 = 7
Bx + 3 = 9
C2x - 1 = 7
Dx/3 = 3
Answer & Solution
Correct answer: A. 4x - 5 = 7
Putting x = 3 in 4x - 5 gives 12 - 5 = 7, so both sides match.
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