document.write( "Question 999610: ``solve each system of equations by the substitution method\r
\n" ); document.write( "\n" ); document.write( "6x+3y=12
\n" ); document.write( "5x+10y=16 \n" ); document.write( "

Algebra.Com's Answer #617199 by Fombitz(32388) $\"\"$ $\"About$

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From eq. 1,
\n" ); document.write( " $\"3y=-6x%2B12\"$
\n" ); document.write( " $\"y=-2x%2B4\"$
\n" ); document.write( "Substitute into eq. 2,
\n" ); document.write( " $\"5x%2B10%28-2x%2B4%29=16\"$
\n" ); document.write( " $\"5x-20x%2B40=16\"$
\n" ); document.write( " $\"-15x=-24\"$
\n" ); document.write( " $\"x=24%2F15\"$
\n" ); document.write( " $\"x=8%2F5\"$
\n" ); document.write( "So then,
\n" ); document.write( " $\"y=-2%288%2F5%29%2B4\"$
\n" ); document.write( " $\"y=-16%2F5%2B20%2F5\"$
\n" ); document.write( " $\"y=4%2F5\"$
\n" ); document.write( " \n" ); document.write( "

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