We are given the following definition.
a$b$c=- a-b-c/c-b-a
This means, that for any given a, b, and c, the value of the expression on the left-hand side is the same as the value of the expression on the right-hand side.
To find -2$( -4)$ 5, we can substitute a= -2, b= -4, and c= 5 in the expression on the right-hand side and evaluate the result.
Back to our question. How do we interpret the leading negative in -2$(-4)$5?
Is it -(2$(-4)$5)?
Is it (-2)$(-4)$5?
Since this is a newly introduced operation, there is no agreement to apply.
In our solution above, we substituted a=-2, b=-4 and c=5 to find -2$(-4)$5.
This assumes that we used the second interpretation.
Let's see the result using the first interpretation.
In this case we need to substitute a=2, b=-4 and c=5.
