Math Is Fun Forum
Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °
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#1 2006-05-21 05:23:16
- Mathaphobe
- Member
- Registered: 2006-05-20
- Posts: 18
It said to leave a thought behind right?
If you add a -1 to a -1 do you get a 2 or a -2?
Well theres my thought 
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#2 2006-05-21 10:17:14
- Matthew
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Re: It said to leave a thought behind right?
-1 + -1 = -2
because if you add more negative to something, you make it more negative
-1 - (-1) = 0
as if you minus a minus your might as well be adding, cause your taking away a negative, your actually making it more positive.
So its the same as -1 + 1 =0
heh, hope that doesn't confuse you too much
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