document.write( "Question 1019999: Please how do I solve this problem: (1) 3x + 7y = 9
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Algebra.Com's Answer #635947 by ikleyn(52788) $\"\"$ $\"About$

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\n" ); document.write( "Please how do I solve this problem: (1) 3x + 7y = 9
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document.write( "3x + 7y = 9,      (1)\r\n" );
document.write( "y = 11/7 - 3x/7.  (2)\r\n" );
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document.write( "Multiply equation (2) by 7 (both sides). You will get \r\n" );
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document.write( "7y = 11 - 3x,     (3)\r\n" );
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document.write( "or\r\n" );
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document.write( "3x + 7y = 11.     (4)\r\n" );
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document.write( "Now you have the system of two equations\r\n" );
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document.write( "3x + 7y =  9      (1)\r\n" );
document.write( "3x + 7y = 11      (4)\r\n" );
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document.write( "Left sides are identical, but the right sides are different.\r\n" );
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document.write( "What does it mean?   - Correct, the system has no solutions.\r\n" );
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