Respuesta :

ja13626

Answer:

R = 5

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

hoifenkwok

Answer:

 =  5

Step-by-step explanation:

1. Add 8 to both sides of the equation

2 . Simplify

3 . Subtract  4  from both sides of the equation

4 . Simplify  ( combine like terms )

5 . Divide both sides of the equation by the same term

6 . Simplify