document.write( "Question 1050023: y=3x-5 y=-2x-15
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Algebra.Com's Answer #665617 by ikleyn(52864) $\"\"$ $\"About$

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document.write( "You have two equations\r\n" );
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document.write( "y =  3x -  5,    (1)\r\n" );
document.write( "y = -2x - 15.    (2)\r\n" );
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document.write( "You just have \"y\" expressed via \"x\" in the equation (1): y 3x-5.\r\n" );
document.write( "Simply substitute it instead of \"y\" into the second equation. You will get\r\n" );
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document.write( "3x - 5 = -2x -15.   (3)\r\n" );
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document.write( "Now you have a single equation for one unknown \"x\" only.\r\n" );
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document.write( "Simplify and solve it.\r\n" );
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document.write( "I can express this procedure in other words.\r\n" );
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document.write( "Sinse the left sides of the equations (1) and (2) are identical, their right sides are equal:\r\n" );
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document.write( "3x - 5 = -2x -15.   (4)\r\n" );
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document.write( "You get the sane equation as (3).\r\n" );
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document.write( "Now simplify and solve it.\r\n" );
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