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Mathematics
Jeffery Stanley
10 November, 13:08
If 678 + - 67 is x, then what is x?
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Georgia Ryan
10 November, 16:41
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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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