document.write( "Question 1092380: A finite arithmetic sequence has 12 terms. The last term is 100 and the common difference is 3.What is the firt term
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Algebra.Com's Answer #706985 by greenestamps(13200)\"\" \"About 
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The 12th term is the first term plus the common difference 11 times; so the first term is the 12th term minus the common difference 11 times.
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