-9 + -9
This is the same as -9 - 9...
...which equals -18
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9 + (-8) = 1
Negative 12 minus 3 plus 9 is equal to -6
9 to negative 2 = 1/9 to plus 2 = 1/81
9
Negative 9 + positive 3 = -6 and negative six - negative 3 is -9.Vanessa Hudgensage 12