2^x-2^x-2=3(2^13)

solution is 15 but I can't find it!

thanks for your reply.
Unfortunately I am still confuse :)
how x can be written as x-2+2?
I started with 2^x-2 which for me equal 2x/4, but I am stuck after!
thanks

Thanks, got it!

If x and y are greater than 0, is x=1?
1- x/y=1
2- xy=1

I thought B was enough but apparently the answer is C !?
Can someone help on this one?
Thanks

Thank you for your help. I got it now.