What would the answer be?
x+3/x^2-2x-3 - 7/x^-1
x+3/x^2-2x-3 - 7/x^-1
-
You need to use some brackets to make your question clear as it could mean several things.
however -7/x^-1 = -7x is one simplification.
however -7/x^-1 = -7x is one simplification.