document.write( "Question 1172462: the 7th term of am AP is 17 and the 13th term is 12 more than the 7th term.
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Algebra.Com's Answer #797498 by ikleyn(52787) $\"\"$ $\"About$

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document.write( "Between the 7th term and the 13th term of an AP, there are 13-7 = 6 equal gaps (intervals in the number line).\r\n" );
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document.write( "So, each such a gap is   = 2.\r\n" );
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document.write( "Each gap length is the common difference of the AP.\r\n" );
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document.write( "Hence, the common difference of this AP is  2.      ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "Notice that the given value of the 7th term (17) is an EXCESSIVE and UNECCESSARY info.\r
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