document.write( "Question 233813: solve this system of equations by elimination
\n" ); document.write( "3x+4y=13
\n" ); document.write( "5x-9y=6 \n" ); document.write( "

Algebra.Com's Answer #172522 by ly12603(44) $\"\"$ $\"About$

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y=1 x=3 start by solving for one of the variables:
\n" ); document.write( "3x+4y=13
\n" ); document.write( "-4y+-4y
\n" ); document.write( "3x=13-4y
\n" ); document.write( "(divide by 3)
\n" ); document.write( "x=4.3(repeating)-1.3(repeating)y\r
\n" ); document.write( "\n" ); document.write( "*next substitute what you just found out in*
\n" ); document.write( "5x-9y=6
\n" ); document.write( "5(4.3(repeating)-1.3(repeating) y)-9y=6
\n" ); document.write( "21.6 (repeating)-6.6 (repeating)y-9y=6
\n" ); document.write( "-21.6(repeating)=-21.6 (repeating)
\n" ); document.write( "*equals*
\n" ); document.write( "-15.6(repeating) y = -15.6 (repeating)
\n" ); document.write( "**divide by the coefecient of y**
\n" ); document.write( "y=1\r
\n" ); document.write( "\n" ); document.write( "*next substitute what you found out for y in*
\n" ); document.write( "5x-9y=6
\n" ); document.write( "5x-9(1)=6
\n" ); document.write( "+9=+9
\n" ); document.write( "5x=15
\n" ); document.write( "*divide by 5*
\n" ); document.write( "x=3 \n" ); document.write( "

\n" );