document.write( "Question 1038594: a+4b=7, 3a+12b=20
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Algebra.Com's Answer #653309 by ikleyn(52787) $\"\"$ $\"About$

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document.write( " a +  4b =  7,   (1)\r\n" );
document.write( "3a + 12b = 20.   (2)\r\n" );
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document.write( "This system has no solution.\r\n" );
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document.write( "Note that the left side of (2) is 3 times the left side of (1),\r\n" );
document.write( "while right sides are not in this proportion.\r\n" );
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\n" ); document.write( "\n" ); document.write( "See the lesson Geometric interpretation of the linear system of two equations in two unknowns in this site.\r
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