document.write( "Question 1150756: The third term of an a.p is 4x-2y and the 9th term is 10x -8y.find the common difference \n" ); document.write( "
Algebra.Com's Answer #772194 by MathTherapy(10806)\"\" \"About 
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The third term of an a.p is 4x-2y and the 9th term is 10x -8y.find the common difference
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Being an A.P., we get: \"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%5B3%5D%2C+%22=%22%2C+a%5B1%5D+%2B+%283++-++1%29d%29\" ----- Substituting 3 for n
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document.write( "\"matrix%281%2C3%2C+4x++-++2y%2C+%22=%22%2C+a%5B1%5D+%2B+2d%29\" ------ Substituting 4x - 2y for \"a%5B3%5D\" ----- eq (i)  \r
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document.write( "\"matrix%281%2C3%2C+a%5B9%5D%2C+%22=%22%2C+a%5B1%5D+%2B+%289++-++1%29d%29\"
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document.write( "\"matrix%281%2C3%2C+10x++-++8y%2C+%22=%22%2C+a%5B1%5D+%2B+8d%29\" ------ eq (ii)\r
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document.write( "6x  -  6y = 6d ------ Subtracting eq (i) from eq (ii)
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document.write( "6(x  -  y) = 6(d)
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document.write( "If you're learning SEQUENCES, the way I did the problem is the CORRECT way to do it. IGNORE that other person who believes that he's the only one on earth who knows how to do math. 
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document.write( "In mathematics there are formulas that you have to learn, and he believes it's UNNECESSARY to learn and apply these formulas. AGAIN, IGNORE HIM!!! \n" );
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