document.write( "Question 151863: 3x-6y=30
\n" ); document.write( "y=-6x=34 \n" ); document.write( "

Algebra.Com's Answer #112824 by jojo14344(1513) $\"\"$ $\"About$

You can put this solution on YOUR website!
3x-6y=30
\n" ); document.write( "y=-6x=34
\n" ); document.write( "Re-writing:
\n" ); document.write( " $\"3x-6y=30\"$ ----------------------------> eqn 1
\n" ); document.write( " $\"y=-6x-34\"$ ----------------------------> eqn 2
\n" ); document.write( "Substitute eqn 2 in eqn 1:
\n" ); document.write( " $\"3x-6%28-6x-34%29=30\"$
\n" ); document.write( " $\"3x%2B36x%2B204=30\"$
\n" ); document.write( " $\"39x=30-204\"$
\n" ); document.write( " $\"39x=-174\"$ -----> $\"cross%2839%29%2Ax%2Fcross%2839%29=cross%28-174%29%2A4.4615385%2Fcross%2839%29\"$
\n" ); document.write( " $\"x=-4.4615385\"$
\n" ); document.write( "For y in eqn 2:
\n" ); document.write( " $\"y=-6%28-4.4615385%29-34\"$
\n" ); document.write( " $\"y=-7.2307692\"$
\n" ); document.write( "To check via eqn 1:
\n" ); document.write( " $\"3%28-4.4615385%29-6%28-7.2307692%29=30\"$
\n" ); document.write( " $\"-13.384616%2B43.3841615=30\"$
\n" ); document.write( " $\"30=30\"$
\n" ); document.write( "Thank you,
\n" ); document.write( "Jojo
\n" ); document.write( " \n" ); document.write( "

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