Combinators: Negative output of a chest (subtraction to all incoming signals)

[jacolguz]

I have a chest and I would like that all its content have an output with the inverted values or a way to subtract to all incoming signals (negative)
Having a combinator for each item is not a choice because the content that flows in that chest is so random.
Is there any way?
This is the idea:

[BaggyK]

I have a chest and I would like that all its content have an output with the inverted values or a way to subtract to all incoming signals (negative)
Having a combinator for each item is not a choice because the content that flows in that chest is so random.
Is there any way?
This is the idea:

Yes there is a way, and you seem to be almost there. Use an arithmetic combinator and set it to each *= -1, and output each.