Math problems

i would like to test this board's knowledge. i will ask a series of problems to do this. i have the answers in hand so i will know if you are wrong or not.

here is problem # 1:
2w-1/w+1 - 1/w-1 = ?

Go!

>>13
"American English"? Is that a variety of hot cold or dry water?

English is what's spoken in England. Everything else is a bastardisation of this language.