Respuesta :
Answer:
R = 5
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
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