Question

Simplify 9 - {x - (7 + x)}. (a) 16 (b) -2x + 2 (c) -2x + 16 (d) 2x + 2

Answer 1

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

Answer 2

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