document.write( "Question 1131527: The first term of an arithmetic sequence is -3 and the fifteenth term is 53. What is the common difference of the sequence?\r
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Algebra.Com's Answer #748240 by MathTherapy(10552)\"\" \"About 
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\n" ); document.write( "The first term of an arithmetic sequence is -3 and the fifteenth term is 53. What is the common difference of the sequence?\r
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Specific term of an AP: \"matrix%281%2C3%2C+a%5Bn%5D%2C+%22=%22%2C+a%5B1%5D+%2B+%28n+-+1%29d%29\" 
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document.write( "\"matrix%281%2C3%2C+a%5B15%5D%2C+%22=%22%2C+-+3+%2B+%2815+-+1%29d%29\" --- Substituting \"matrix%282%2C3%2C+15%2C+for%2C+n%2C+-+3%2C+for%2C+a%5B1%5D%29\"
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document.write( "53 = - 3 + 14d ---------- Substituting \"matrix%281%2C3%2C+53%2C+for%2C+a%5B15%5D%29\"
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document.write( "56 = 14d ------------ Adding 3 to both sides
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document.write( "d, or common difference = \"highlight_green%28matrix%281%2C3%2C+56%2F14%2C+%22=%22%2C+4%29%29\" \n" );
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