document.write( "Question 1172467: he 7th term of an AP is 17 and the 13th term is 12 more than the 7th term.
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Algebra.Com's Answer #797510 by Boreal(15235) $\"\"$ $\"About$

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a7=a1+d(n-1)=a1+d(6)=17, so a1+6d=17
\n" ); document.write( "a13=a1+d(12), so a1+12d=29.
\n" ); document.write( "d=2
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\n" ); document.write( "a1+12=17a1=5, which is the answer.
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\n" ); document.write( "the difference is 2, so 6 more terms to a7 is 5+12=17\r
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