document.write( "Question 194958: how do you solve this substitution\r
\n" ); document.write( "\n" ); document.write( "x+2y=2
\n" ); document.write( "5x -3y=-29 \n" ); document.write( "
Algebra.Com's Answer #146292 by checkley77(12844)\"\" \"About 
You can put this solution on YOUR website!
x+2y=2
\n" ); document.write( "x=2-2y
\n" ); document.write( "Now replace x with (2-2y) in the second equation & solve for y.
\n" ); document.write( "5x-3y=-29
\n" ); document.write( "5(2-2y-3y=-29
\n" ); document.write( "10-10y-3y=-29
\n" ); document.write( "-13y=-29-10
\n" ); document.write( "-13y=-39
\n" ); document.write( "y=-39/-13
\n" ); document.write( "y=3 ans.
\n" ); document.write( "x=2-2*3
\n" ); document.write( "x=2-6
\n" ); document.write( "x=-4 ans.
\n" ); document.write( "Proof:
\n" ); document.write( "5*-4-3*3=-29
\n" ); document.write( "-20-9=-29
\n" ); document.write( "-29=-29\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
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