document.write( "Question 934633: elimination\r
\n" ); document.write( "\n" ); document.write( "4x + 2y = 34
\n" ); document.write( "10x- 4y = -5 \n" ); document.write( "

Algebra.Com's Answer #567623 by MathLover1(20850) $\"\"$ $\"About$

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\n" ); document.write( " $\"4x+%2B+2y+=+34\"$ ...eq.1..both sides multiply by $\"2\"$
\n" ); document.write( " $\"10x-+4y+=+-5\"$ ....eq.2
\n" ); document.write( "________________\r
\n" ); document.write( "\n" ); document.write( " $\"8x+%2B+4y+=+68\"$ ...eq.1
\n" ); document.write( " $\"10x-+4y+=+-5\"$ ....eq.2
\n" ); document.write( "___________________________add\r
\n" ); document.write( "\n" ); document.write( " $\"8x+%2B+4y+%2B10x-+4y=+68-5\"$ ....eliminate $\"y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"8x+%2B+cross%284y%29+%2B10x-+cross%284y%29=+63\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"18x=+63\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x=+63%2F18\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x=3.5\"$ \r
\n" ); document.write( "\n" ); document.write( "go to $\"10x-+4y+=+-5\"$ ....eq.2, plug in $\"x\"$ value\r
\n" ); document.write( "\n" ); document.write( " $\"10%2A3.5-+4y+=+-5\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"35-+4y+=+-5\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"35%2B5+=4y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"40+=4y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y=10\"$ \r
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