=IF(D6<0,D6,IF(D9<D8,D6-D9*D7,D6-(D9*D7)))

The above is the the current formula I have, however I need to change
it a bit to get the results I need for the different variables. Here
are my conditions:

If C6<0 and C7=1 then C6, else -(C9*C7)
if C9<C8 then C6-C9*C7, else C6-(C9*C7)

I came up with this, but it says that I have too many arguments.

=IF(AND(C6<0,C7=1),C6,-(C9*C7), IF(C9<C8,C6-C9*C7,C6-(C9*C7)))

Some Excel genius out there must be able to help me.

thanks in advance

Day