document.write( "Question 310299: If 3x +2y = 7 and kx - y =5 which of the following represents the value of x in terms of k?\r
\n" ); document.write( "\n" ); document.write( "A 12 /(3 + 2k)
\n" ); document.write( "B 17/(3+2k)
\n" ); document.write( "C 12/(3+k)
\n" ); document.write( "D 17/(3+k)
\n" ); document.write( "E 2/(3+k)\r
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Algebra.Com's Answer #221878 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
1.\"3x+%2B2y++=+7\"
\n" ); document.write( "2.\"kx+-+y++=5\"
\n" ); document.write( "From eq. 2,
\n" ); document.write( "\"kx-y=5\"
\n" ); document.write( "\"y=kx-5\"
\n" ); document.write( "\"2y=2kx-10\"
\n" ); document.write( "Substitute this expression for y into eq. 1,
\n" ); document.write( "\"3x%2B2y=7\"
\n" ); document.write( "\"3x%2B2kx-10=7\"
\n" ); document.write( "\"x%283%2B2k%29=17\"
\n" ); document.write( "\"highlight%28x=17%2F%283%2B2k%29%29\"
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\n" ); document.write( ".
\n" ); document.write( "\"B\" is the correct answer.
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