The following rational equation has denominators that contain variables. For this equation, a. Write the value...

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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. 2 3 + x+4 X-3 21 (x+4)(x-3) 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. 2 3 + x+4 X-3 21 (x+4)(x-3)