document.write( "Question 273620: 2x-4y=22
\n" ); document.write( "4x+5y=-8 \n" ); document.write( "

Algebra.Com's Answer #199851 by checkley77(12844) $\"\"$ $\"About$

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2x-4y=22 multiply by -2 & add.
\n" ); document.write( "4x+5y=-8
\n" ); document.write( "-4x+8y=-44
\n" ); document.write( "--------------
\n" ); document.write( "13y=-52
\n" ); document.write( "y=-52/13
\n" ); document.write( "y=-4 ans.
\n" ); document.write( "2x-4*-4=22
\n" ); document.write( "2x+16=22
\n" ); document.write( "2x=22-16
\n" ); document.write( "2x=6
\n" ); document.write( "x=6/2
\n" ); document.write( "x=3 ans.
\n" ); document.write( "Proof:
\n" ); document.write( "4*3+5*-4=-8
\n" ); document.write( "12-20=-8
\n" ); document.write( "-8=-8 \n" ); document.write( "

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