document.write( "Question 1177920: Solve the linear system using elimination.
\n" ); document.write( "x-2y=4
\n" ); document.write( "3x+4y=2 \n" ); document.write( "

Algebra.Com's Answer #807070 by MathLover1(20850) $\"\"$ $\"About$

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\n" ); document.write( "\n" ); document.write( " $\"x-2y=4\"$ ........both sides multiply by $\"2\"$
\n" ); document.write( " $\"3x%2B4y=2\"$
\n" ); document.write( "--------------------------
\n" ); document.write( " $\"2x-4y=8\"$
\n" ); document.write( " $\"3x%2B4y=2\"$
\n" ); document.write( "----------------------add both eq.\r
\n" ); document.write( "\n" ); document.write( " $\"2x-4y%2B3x%2B4y=8%2B2\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"2x-cross%284y%29%2B3x%2Bcross%284y%29=8%2B2\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"5x=10\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x=2\"$ \r
\n" ); document.write( "\n" ); document.write( "go to\r
\n" ); document.write( "\n" ); document.write( " $\"x-2y=4\"$ .........substitute $\"x\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"2-2y=4\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"2-4=2y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"-2=2y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y=-1\"$ \r
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