Question

Help me please im about to give up

Answer 1

A variable for the first one would be E for the elephants
a good expression would be 3E = B for beavers and E for elephants
the second one would be A for adult
the first expression could be A and the second could be A - 6

Answer 2

The expression for beavers is:
Elephants = 3B
B implies Beavers

Beavers = E/3
E is Elephants

And you could say that B is a variable