Answer:
[tex]\displaystyle 2r+2[/tex]
Step-by-step explanation:
Group like terms.
[tex]\displaystyle 8r-6r+7-5[/tex]
Add numbers from left to right.
[tex]\displaystyle8-6=2[/tex]
[tex]2r+7-5[/tex]
Add and subtract numbers from left to right.
[tex]7-5=2[/tex]
[tex]\displaystyle 2r+2[/tex], which is our answer.
Hope this helps!