we have the expression
8=x-y
Verify each equation
N 1
-96=-12(x-y)
(-96/-12)=x-y
8=x-y -----> is equivalent to the given expression
N 2
-80=(x-y)*-10
(-80/-10)=x-y
8=x-y ----> is equivalent to the given expression
N 3
56=7(x-y)
(56/7)=x-y
8=x-y ----> is equivalent to the given expression
N 4
-16=(x-y)*-2
(-16/-2)=x-y
8=x-y ----> is equivalent to the given expression
therefore
the answer is
All the equations are equivalent