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I was supposed to simplify - (-a - 1) - (a - 1), I got 2a + 2, and got the answer wrong.
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4 votes
I was supposed to simplify - (-a - 1) - (a - 1), I got 2a + 2, and got the answer wrong.

User Moshe D
by
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1 Answer

4 votes

Simplify:


\begin{gathered} (-a-1)-(a-1)= \\ -a-1-a+1= \\ -2a \end{gathered}

Answer: -2a

User Fakhriyanto
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