All of the following are equivalent proportions except?

A. a/b = c/d

B. b/a = d/c

C. d/b = c/a

D. c/d = b/a

The answer is......

A not a/b = c/d multiply both sides by d

d a/b = c divide both sides a

d/b = c/a this is answer C so A and C are equiv similar can be shown for B but not for D

Answer D

Thank you!

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