do u think this test is wrong?

Iman pwns xD

New member
my teacher said that some of the tests r wrong and stuff...
any ways this is the problem:

Find the slope of the line that passes through the pair of points ( 7/20, 8/3) and ( 3/8,7/9 ).
A. -19/18
B. 36/157
C. -680/9
D. 1/8

i got : -756

am i wrong, or is this test wrong
 
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