Question

How do you simplify `2= 5+ 2r - \frac{r}{5}`?

Answer 1

You can only simplify expressions or equations with more than 1 unknown.
therefore this equation can be solved, not simplified: `r=-\frac{10}{9}`

Explanation:

`2=5+2r-\frac{r}{5}`
`10=20+10r-r` after multiplying through by 5.
`-10=9r`

Therefore `r=-\frac{10}{9}` if we divide both sides by 9.