Question 225270
Language is important. You didn't say what the problem is. Just
writing down the equation doesn't make it a
problem. I can guess, but you need to be exact 
about it.
I'm guessing you want to simplify it.
{{{5r - 5s/5r + 5s}}}
The middle term has a {{{5}}} on top and bottom.
Rewrite it like this:
{{{5r - (5/5)*(s/r) + 5s}}} Note that {{{5/5 = 1}}}
{{{5r - s/r + 5s}}}
{{{5*(r+s) - s/r}}}