SOLUTION: I have a question which goes like this: An = 2-A*n-1, where A5 = 3. I need to find the tenth value. The answer is -1 but I don't know exactly how to do it. Can you please he

Question 750086: I have a question which goes like this:
An = 2-A*n-1, where A5 = 3. I need to find the tenth value. The answer is -1 but I don't know exactly how to do it.
Can you please help me out?
Thank you
Answer by rothauserc(4718) (Show Source): You can put this solution on YOUR website!
we are given
An = 2-A*n-1, where A5 = 3, what is A10?
we have
3 = 2-A*n-1
there are no parenthesis so we follow the order of operations (do multiplication and division from left to right in the order they appear, then addition and subtraction from left to right in the order they appear)
A5=3 = 2 - 5A - 1
3+5A = 1
5A = -2
A = -2/5
now
A10 = 2-((-2/5)*10)-1
A10 = 2-(-4)-1
A10 = 2+4-1
A10 = 5

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