<u>Answer:</u>
A,C and E are equal with 4 as their solution; F and B are equal with 0 as their solution. D is independent.
<u>Solution:</u>
A.
Taking off the brackets we get,
Here x=4 --- (a)
B.
Multiplying -4 inside we get,
Here x=0 --- (b)
C.
Multiplying -2 inside we get,
Grouping the terms,
Here x=4 --- (c)
D.
Here x=-6 --- (d)
E.
Here x=4 --- (e)
F.
Here x=0 --- (f)
So, from the above calculations we can conclude that (a), (c) and (e) are equal and (f) and (b) are equal but (d) is independent because it has a different solution.