What is

(-1) +(-1)+ (-1)+(-1)+(-1)+  (-1) = ?

Hi!
If the question is (–1) + (–1) + (–1) + (–1) + (–1) + (–1) = ?, then answer is as follows:
 
 (–1) + (–1) + (–1) + (–1) + (–1) + (–1) = – (1 + 1 + 1 + 1 + 1 + 1) = –6
 
If the question is (–1) + (–1) + (–1) + (–1) + (–1) + (–1) + (–1) = ?
 
Then answer is as follows:
 
(–1) + (–1) + (–1) + (–1) + (–1) + (–1) + (–1) = – (1 + 1 + 1 + 1 + 1 + 1 + 1) = –7
 
Cheers!

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