Answer:
[tex]{ \tt{12 - \frac{1}{5} = 2r + 1}} \\ \\ { \tt{ \frac{60 - 1}{5} = 2r + 1}} \\ \\ { \tt{59 = 5(2r + 1)}} \\ \\ { \tt{59 = 10r + 5}} \\ \\ { \tt{10r + 5 = 59}} \\ \\ { \tt{10r = 54}} \\ \\ { \tt{r = 5 \frac{2}{5} }}[/tex]
r=27/5 or 5.4
Step-by-step explanation:
