Answer
Doesn't make sense.
Work Step by Step
If you multiply the second expression with $-1$, you have changed the problem.
For instance, you want to add $A+B$ and multiply B with -1,
you get $A+(-B)=A-B$,
which is not equivalent to the problem you started out with.
What you want instead, is to multiply B with $1.$ It doesn't change then.
When B is a rational expression, you multiply with $\displaystyle \frac{-1}{-1}$, which is 1.
In this way you multiply BOTH the numerator and denominator with -1, but you don't change the value of the expression.
Doesn't make sense.
