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# Find the 17th term of each sequence. $a_{18}=18, d=-4$

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We are given the $18$th term and need to find the next term that is $17$th term. We are also given $d$ (common difference) which is $-4$. We know that common difference in an arithmetic sequence is the difference between consequent terms. Therefore, the difference between the $18$th term and $17$th term is $-4$. Thus we have to subtract the common difference to the $18$th term to get the $17$th term.

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