6 + - 1 = 5
Here is a little table to help with manipulating double signs.
NB If no sign is given then read it as (+).
So for the above sum
we could write + 6 + - 5 = +5
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6 + (-1)
positive and negative will equal negative.
so it's 6-1
that would equal 5.
positive and positive= positive
positive negative= negative
negative negative = positive
negative positive= negative
Positive six: 6 or +6.
-7--1=6. A double minus makes a plus.
-1 -1 ''-5 ''-6 _ + _ = _ = -1 ''6 6'' ''''6 (ignore the all the apostrophes, they are for place holding)
negative 2
-1