what is the sum of (- 3) + (- 4) + (- 6)

(-3)+(-4)+(-6)
-3-4-6 [ (+ ) ? (-)=(-)]
{-3-4}-6
-7-6
-13

-1 is the answer

(-3) + (-4) + (-6)
-3 -4 -6
-13

(-3)+(-4)+(-6)
-3-4-6
-13
EXPLANATION-
When brackets will open so sign will also change so + ? - = -, so the sign will change then - ? - =+, so they all will add then the sign will come of that number which will greater than other so -6 is greater than -3 and -4 so the sign will be of - in answer...
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