document.write( "Question 82465: 2x-2y=-12
\n" ); document.write( "4x-7y=-15 \n" ); document.write( "

Algebra.Com's Answer #59065 by checkley75(3666) $\"\"$ $\"About$

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MULTIPLY EQUATION 1 BY -2 (-4X+4Y=24) NOW ADD THESE 2 EQUATIONS
\n" ); document.write( "-4X+4Y=24
\n" ); document.write( "4X-7Y=-15
\n" ); document.write( "----------------------------
\n" ); document.write( "-3Y=9
\n" ); document.write( "Y=9/-3
\n" ); document.write( "Y=-3 ANSWER.
\n" ); document.write( "4X-7*-3=-15
\n" ); document.write( "4X+21=-15
\n" ); document.write( "4X=-15-21
\n" ); document.write( "4X=-36
\n" ); document.write( "X=-36/4
\n" ); document.write( "X=-9 ANSWER.
\n" ); document.write( "PROOF
\n" ); document.write( "2*-9-2*-3=-12
\n" ); document.write( "-18+6=-12
\n" ); document.write( "-12=-12 \n" ); document.write( "

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