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Directed Numbers / Signed Numbers / Relative Numbers
Positive or Negative Numbers    Examples: -10, -6, -1, +1, +3, +12

POSITIVE COMBINE DOUBLE SIGNED NUMBERSNEGATIVE
example +(-7)-(-8)     example -(-1)+(+10)
example -(-8)-(-6)     example +(-8)+(-6)

+ (-7) - (-8) = -7 +8 = +8 -7 = +1 = 1

 

- (-1) + (-10) = +1 +10 = +11 = 11

- (-8) - (-6) = +8 +6 = +14 = 14   + (-8) + (-6) = -8 -6 = -14

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