+118723 A negative and a negative only make a positive if
1) A negative number is multiplied by another negative number eg -3*-2= +6
2) A negative number is divided by another negative number eg -12 / -4 = +3
and
3) If the + and - signs are so close together that you can put a circle around them and nothing else will be in the circle.
6 - - 4 = 6+4
also
6 - (-4) = 6 - - 4 = 6+4
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However
-6-12=-18 !!
