Respuesta :

940172

Answer:

A=   [tex]\quad x-\frac{12}{x+7}[/tex]

B=  [tex]\frac{x}{x+7}[/tex]

C= [tex]\:\left(-\infty \:,\:-7\right)\cup \left(-7,\:\infty \:\right)[/tex]

Step-by-step explanation:

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