document.write( "Question 1085441: 5y-20=7x
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document.write( "20y=28x+40 \n" );
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Algebra.Com's Answer #699519 by ikleyn(52786)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( " \r\n" ); document.write( "Let me re-write your equations in this equivalent standard form:\r\n" ); document.write( "\r\n" ); document.write( " 7x - 5y = -20, (1)\r\n" ); document.write( "28x - 20y = -40. (2)\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Now, I see that the second equation has the coefficients proportional to that of the first equation with \r\n" ); document.write( "the proportionality coefficient 4.\r\n" ); document.write( "\r\n" ); document.write( "But the right sides are not in this proportion.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "It means that the system IS NOT CONSISTENT. In other words, it has no solutions.\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "See the lesson\r \n" ); document.write( "\n" ); document.write( " - Geometric interpretation of the linear system of two equations in two unknowns \r \n" ); document.write( "\n" ); document.write( "in this site.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Also, you have this free of charge online textbook in ALGEBRA-I in this site\r \n" ); document.write( "\n" ); document.write( " - ALGEBRA-I - YOUR ONLINE TEXTBOOK.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The referred lesson is the part of this online textbook under the topic \n" ); document.write( "\"Systems of two linear equations in two unknowns\".\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |