document.write( "Question 1102021: In the arithmetic sequence given​ below, what term is the number negative 15​?
\n" ); document.write( "5,10 thirds, 5 thirds,...
\n" ); document.write( "I am stuck after getting the difference which is the second term subtracted by the first term, which is negative 5 thirds. I know the formula for getting the answer for the missing term that being an=a1+(n-1). So I tried figuring out this one on my own, but end up with weird numbers, which is typical of doing arithmetic sequences that involve fractions. Also by the way the first term is 5 and the second term is 10 thirds.
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Algebra.Com's Answer #716654 by josgarithmetic(39618)\"\" \"About 
You can put this solution on YOUR website!
Check the common difference to successive terms and see where the sequence is going. \"-5%2F3\" is the common difference, and makes the sequence DECREASE.\r
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\n" ); document.write( "\n" ); document.write( "General term: \"5%2B%28n-1%29%28-5%2F3%29\", or better, \"highlight_green%285-%285%2F3%29%28n-1%29%29\".\r
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\n" ); document.write( "\n" ); document.write( "What is the index for the term, \"-15\" ?
\n" ); document.write( "\"5-%285%2F3%29%28n-1%29=-15\"-----solve this for n.
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