document.write( "Question 275375: what is the sum of the integers between 20 and 480 that are multiples of 11?\r
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Algebra.Com's Answer #200856 by user_dude2008(1862)\"\" \"About 
You can put this solution on YOUR website!
22+33+44+...+451+462+473 = 11(2+3+4+...+41+42+43) \r
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\n" ); document.write( "\n" ); document.write( "11(2+3+4+...+41+42+43) = 11(1+2+3+4+...+41+42+43-1)\r
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\n" ); document.write( "\n" ); document.write( "11(2+3+4+...+41+42+43) = 11((43(43+1))/2-1)\r
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\n" ); document.write( "\n" ); document.write( "11(2+3+4+...+41+42+43) = 11(946-1)\r
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\n" ); document.write( "\n" ); document.write( "11(2+3+4+...+41+42+43) = 11(945)\r
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\n" ); document.write( "\n" ); document.write( "11(2+3+4+...+41+42+43) = 10395\r
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\n" ); document.write( "\n" ); document.write( "Answer: 22+33+44+...+451+462+473 = 10395
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