3(r-7)=24
Multiply bracket out
3r - 21 = 24
+21
3r. = 45
÷ 3
r = 15
Hope this helps!
Hi, there.
_____
First off, distribute 3 through parentheses.
[tex]\boldsymbol{3(r-7)=24}\\\boldsymbol{3r-21=24}[/tex]
Next, add 21 to both sides.
[tex]\boldsymbol{3r=45}[/tex]
Divide both sides by 3.
[tex]\boldsymbol{r=15}[/tex]
Hope the answer - and explanation - made sense,
happy studying.
