document.write( "Question 1134391: The 28th term of an AP is -5. Find the common difference if its first term is 31. \n" ); document.write( "

Algebra.Com's Answer #751765 by ikleyn(52790) $\"\"$ $\"About$

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document.write( "There are 27 equal gaps between the 1-st and the 28-th terms,\r\n" );
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document.write( "while the distance between these terms is  31 - (-5) = 36.\r\n" );
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document.write( "Hence, the common difference (the gap between the neighbor terms) is   = .      ANSWER\r\n" );
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document.write( "CHECK.   =  = 31 - . = 31 -  = 31 - 36 = -5.    ! Correct !\r\n" );
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