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