document.write( "Question 864208: 3x-4y=2
\n" ); document.write( "-2x+6y=-18 \n" ); document.write( "

Algebra.Com's Answer #520861 by checkley79(3341) $\"\"$ $\"About$

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3x-4y=2 multiply by 2
\n" ); document.write( "-2x+6y=-18 multiply by 3 & add.
\n" ); document.write( "6x-8y=4
\n" ); document.write( "-6x+18y=-54
\n" ); document.write( "-------------
\n" ); document.write( "10y=-50
\n" ); document.write( "y=-50/10
\n" ); document.write( "y=-5 ans.
\n" ); document.write( "3x-4*-5=2
\n" ); document.write( "3x+20=2
\n" ); document.write( "3x=2-20
\n" ); document.write( "3x=-18
\n" ); document.write( "x=-18/3
\n" ); document.write( "x=-6
\n" ); document.write( "Proof:
\n" ); document.write( "-2*-6+6*-5=-18
\n" ); document.write( "12-30=-18
\n" ); document.write( "-18=-18 \n" ); document.write( "

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