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10 November, 13:08

If 678 + - 67 is x, then what is x?

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  1. 10 November, 16:41
    0
    When you add a negative number to a positive number it is the same as subtracting. (I like to think of it like the addition symbol and the negative symbol don't match - so then you know its negative.)

    So ... 678 + (-67) = 611
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