document.write( "Question 927791: Find the 1st term of the arithmetic sequence with 11th term −1 and 21th term 7. \n" ); document.write( "

Algebra.Com's Answer #563285 by MathTherapy(10552) $\"\"$ $\"About$

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\n" ); document.write( "Find the 1st term of the arithmetic sequence with 11th term −1 and 21th term 7.
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document.write( "______ ---------- eq (i)\r
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document.write( " ------- eq (ii) 
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document.write( " ------- Substituting  for d in eq (ii)
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document.write( "Term 1 or , or  
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document.write( "You can do the check!! 
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document.write( "===================
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