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Galina-37 [17]
3 years ago
14

Simplify 9 - {x - (7 + x)}.

Mathematics
2 answers:
r-ruslan [8.4K]3 years ago
6 0
Let's simplify step-by-step.

<span><span>9−x</span>−<span>(<span>7+x</span>)

</span></span>Distribute the Negative Sign:

<span>=<span><span>9−x</span>+<span><span>−1</span><span>(<span>7+x</span>)

</span></span></span></span><span>=<span><span><span><span>9+</span>−x</span>+<span><span>(<span>−1</span>)</span><span>(7)</span></span></span>+<span><span>−1</span>x

</span></span></span><span>=<span><span><span><span><span><span>9+</span>−x</span>+</span>−7</span>+</span>−x

</span></span>Combine Like Terms:

<span>=<span><span><span>9+<span>−x</span></span>+<span>−7</span></span>+<span>−x

</span></span></span><span>=<span><span>(<span><span>−x</span>+<span>−x</span></span>)</span>+<span>(<span>9+<span>−7</span></span>)

</span></span></span><span>=<span><span>−<span>2x</span></span>+2

</span></span>Answer:

<span>=<span><span>−<span>2x</span></span>+<span>2</span></span></span>
Daniel [21]3 years ago
3 0
<span>9 - {x - (7 + x)}
= 9 - { x - 7 - x }
= 9 - {-7}
= 9 + 7
= 16

In short, Your Answer would be 16

Hope this helps!</span>
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