The following rational equation has denominators that contain variables. For this equation, a. Write the value or values of the variable that make a denominator zero. These are the restrictions on the variable. b. Keeping the restrictions in mind, solve the equation. 5x x+1 =7- 5 x+1 a. What are the value or values of the variable that makes the denominators zero? x= (Simplify your answer. Use a comma to separate answers as needed.)