Answer:
There are three different answers that are mathematically correct, but I really think answer 1 is the right one.
1)
[tex]5r + 3 = 18[/tex]
[tex]5r = 15[/tex]
[tex]r = 3[/tex]
2)
[tex]5 + 3r = 18[/tex]
[tex]5r = 21\frac{2}{3}[/tex]
[tex]r = 4\frac{1}{3}[/tex]
3)
[tex]5 + 3 = 18r[/tex]
[tex]5r = 2\frac{2}{9}[/tex]
[tex]r=\frac{4}{9}[/tex]
Hope i could help! If you have any questions, ask them in the comments below!
Have a good day! (●'◡'●)
