Answer:
[tex]\boxed{r=2}[/tex]
Step-by-step explanation:
Distributive property: ⇒ a(b+c)=ab+ac
Expand.
[tex]2(3r+4)-3(r+1)=3r+5[/tex]
[tex]3r+5=11[/tex]
Subtract five from both sides of an equation form.
[tex]3r+5-5=11-5[/tex]
[tex]3r=6[/tex]
Then divide three from both sides of an equation form.
[tex]\frac{3r}{3}= \frac{6}{3}[/tex]
Simplify.
[tex]6/3=2[/tex]
[tex]3*2=6[/tex]
[tex]6/2=3[/tex]
[tex]2*3=6[/tex]
[tex]r=2[/tex]
[tex]2=r[/tex]
Hope this helps!
-Charlie
