document.write( "Question 878473: Solve the following system of equation by subtitution or elemination
\n" ); document.write( "(x+8)/7=(3-5y)/4
\n" ); document.write( "3x/5=(27-9y)/10 \n" ); document.write( "

Algebra.Com's Answer #530081 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"%28x%2B8%29%2F7=%283-5y%29%2F4\"$
\n" ); document.write( "Multiply both sides by $\"7%2A4\"$
\n" ); document.write( " $\"4%28x%2B8%29=7%283-5y%29\"$
\n" ); document.write( " $\"4x%2B32=21-35y\"$
\n" ); document.write( "1. $\"4x%2B35y=-11\"$
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( ".\r
\n" ); document.write( "\n" ); document.write( " $\"%283x%29%2F5=%2827-9y%29%2F10\"$
\n" ); document.write( "Multiply both sides by $\"10\"$
\n" ); document.write( " $\"6x=27-9y\"$
\n" ); document.write( " $\"6x%2B9y=27\"$
\n" ); document.write( "2. $\"2x%2B3y=9\"$
\n" ); document.write( "Multiply eq. 2 by (2) and subtract from eq. 1,
\n" ); document.write( " $\"4x%2B35y-4x-6y=-11-18\"$
\n" ); document.write( " $\"29y=-29\"$
\n" ); document.write( " $\"highlight%28y=-1%29\"$
\n" ); document.write( "Then,
\n" ); document.write( " $\"2x%2B3%28-1%29=9\"$
\n" ); document.write( " $\"2x=12\"$
\n" ); document.write( " $\"highlight%28x=6%29\"$
\n" ); document.write( " \n" ); document.write( "

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