-1+(7a*8c)=(7a*8c)-1

Question

-1(7a*8c)=(7a*8c) (-1)

Answer 1

-1 + (7a*8c) = (7a*8c) - 1, yup that's true
-1(7a*8c) = (7a*8c)(-1) , yup, that's also true

is there something else here?

Answer 2

No, thanks Reiny