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
You are welcome....hope you now understand a bit better