document.write( "Question 761933: Average
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\n" ); document.write( "we have: 10 , 10 , and 1 we found their average and it was 7. we found it by
\n" ); document.write( "(10+10+1)/3\r
\n" ); document.write( "\n" ); document.write( "so we got the total average
\n" ); document.write( "but what if the total average is given , and 2 numbers are give how will we find the firt lets see :
\n" ); document.write( " 10 , 10 , x total makes 7\r
\n" ); document.write( "\n" ); document.write( " Find X
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Algebra.Com's Answer #463590 by Cromlix(4381)\"\" \"About 
You can put this solution on YOUR website!
You have three numbers and their average is 7
\n" ); document.write( "7 * 3 = 21 Total before averaging
\n" ); document.write( "10 + 10 + x = 21
\n" ); document.write( " 20 + x = 21
\n" ); document.write( " x = 21 -20
\n" ); document.write( " x = 1
\n" ); document.write( "Hope this helps.
\n" ); document.write( ":-)
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