document.write( "Question 164929: solve the system
\n" ); document.write( "4x+9y=5
\n" ); document.write( "2x-6y=-1 \n" ); document.write( "
Algebra.Com's Answer #121548 by checkley77(12844)\"\" \"About 
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4x+9y=5
\n" ); document.write( "2x-6y=-1 multiply this equation by -2 & add.
\n" ); document.write( "-4x+12y=2
\n" ); document.write( "4x+9y=5
\n" ); document.write( "------------------
\n" ); document.write( "21y=7
\n" ); document.write( "y=7/21
\n" ); document.write( "y=1/3 answer.
\n" ); document.write( "4x+9*1/3=5
\n" ); document.write( "4x+9/3=5
\n" ); document.write( "4x+3=5
\n" ); document.write( "4x=5-3
\n" ); document.write( "4x=2
\n" ); document.write( "x=2/4
\n" ); document.write( "x=1/2 answer.
\n" ); document.write( "Proof:
\n" ); document.write( "2*1/2-6*1/3=-1
\n" ); document.write( "1-6/3=-1
\n" ); document.write( "1-2=-1
\n" ); document.write( "-1=-1 \n" ); document.write( "
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