document.write( "Question 187749: use substitution to solve each system of equations. if the system does not have exactly one solution, state whether it has no solution or infinetly many solutions.\r
\n" ); document.write( "\n" ); document.write( "\"y+=+6x\"
\n" ); document.write( "\"2x+%2B+3y+=+-20\"\r
\n" ); document.write( "\n" ); document.write( "i really need your help!
\n" ); document.write( "please and thank you. \n" ); document.write( "
Algebra.Com's Answer #140754 by checkley77(12844)\"\" \"About 
You can put this solution on YOUR website!
y = 6x
\n" ); document.write( "2x + 3y = -20
\n" ); document.write( "2x+3(6x)=-20
\n" ); document.write( "2x+18x=-20
\n" ); document.write( "20x=-20
\n" ); document.write( "x=-20/20
\n" ); document.write( "x=-1 ans.
\n" ); document.write( "y=6*-1
\n" ); document.write( "y=-6 ans.
\n" ); document.write( "Proof:
\n" ); document.write( "2*-1+3*-6=-20
\n" ); document.write( "-2-18=-20
\n" ); document.write( "-20=-20\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
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