Find f(x+h), f(x+h)-f(x), f(x+h)-f(x)/h, f(x)=2x

help corecctt
f(x+h)= 2(x+h)
f(x+h)-f(x)= 2(x+h)-2x so itss 2h

soooo
f(x+h)-f(x)= 2h
then
2h/h= h?

everything looks good until the last line.

I believe 2h/h = 2, no?