1. ## Simplify

Can I cancel these out?

(-1+x)/(x-1)

I cannot remember if I can do this? If I put a number in for x I get the same values so they will give me one. So I believe that I can with out any problems. I am just having a brain fart today.

Thank you

2. Yes, (-1+x)=(x-1)

take -3+x=4 for example

we know the answer of this is 7.

x-3=4