Answer:
A = - 2n - 1
Explanation:
A=-3+(n-1)(-2)
<=> A = - 3 - 2(n-1)
<=> A = - 3 - 2n -2×(-1)
<=> A = - 3 - 2n + 2
<=> A = - 1 - 2n = - 2n - 1
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