document.write( "Question 705399: -x+y=4
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Algebra.Com's Answer #434580 by solver91311(24713) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "Multiply the first equation by 2:\r\n" );
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document.write( "-2x + 2y =  8\r\n" );
document.write( " 3x - 2y = -7\r\n" );
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document.write( "Add the two equations:\r\n" );
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document.write( "  x + 0y =  1\r\n" );
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document.write( "Simplify\r\n" );
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document.write( "  x      =  1\r\n" );
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document.write( "Substitute back into either original equation:\r\n" );
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document.write( " 3(1) - 2y = -7\r\n" );
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document.write( "Solve for the remaining variable:\r\n" );
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document.write( "      - 2y = -10\r\n" );
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document.write( "         y =   5\r\n" );
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document.write( "Check:\r\n" );
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document.write( " -1  +   5  =  4\r\n" );
document.write( "3(1) - 2(5) = -7\r\n" );
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\n" ); document.write( "John
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\n" ); document.write( "Egw to Beta kai to Sigma
\n" ); document.write( "My calculator said it, I believe it, that settles it
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$\"The$

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