SOLUTION: The number of the sequence is 17,if the second number is 3,what is the first number?

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Question 983042: The number of the sequence is 17,if the second number is 3,what is the first number?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Just taking a guess, you have common difference of 17 as "number of the sequence". Term at index 2 is 3. If common difference is 17, assuming going forward, then going backward to index 1, you subtract 17 from 3:

A%5B1%5D=A%5B2%5D-17
A%5B1%5D=3-17
highlight_green%28A%5B1%5D=-14%29