Respuesta :

MrGumby

Answer:

The correct answer is a) 16

Step-by-step explanation:

To find this first distribute the interior negative to both terms in the parenthesis.

9 - {x - (7 + x)}

9 - {x - 7 - x}

Now simplify the like terms.

9 - {-7}

Now distribute the negative once again.

9 + 7

And complete the indicated operation.

16

MrsStrong

Answer:

A

Step-by-step explanation:

To simplify the expression:

  • multiply a negative into the inner parenthesis
  • add like terms inside the outer parenthesis
  • multiply a negative to the terms inside the parenthesis
  • add like terms

9- {x-(7+x)}

9- {x-7-x}

9- {-7}

9+7

16

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