n*(n+1)/2
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equation works for n = 0 and n = 1 as factors are n and n - 1
N = 1
The answer to the equation -n = -10 is n = 10. To solve for n, you need to isolate the variable by dividing both sides of the equation by -1 to get n = -10 / -1, which simplifies to n = 10.
There are infinitely many possibilities. One of these is n+1 = 0
n = 1/2