document.write( "Question 700942: -3x+3y=3
\n" ); document.write( "-5x+y=13
\n" ); document.write( "Solve by subsitution \n" ); document.write( "

Algebra.Com's Answer #432072 by stanbon(75887) $\"\"$ $\"About$

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-3x+3y=3
\n" ); document.write( "-5x+y=13
\n" ); document.write( "--------------
\n" ); document.write( "y = 5x+13
\n" ); document.write( "---
\n" ); document.write( "Substitute for \"y\" and solve for \"x\":
\n" ); document.write( "-3x+3y = 3
\n" ); document.write( "Divide thru by 3 to get:
\n" ); document.write( "-x + y = 1
\n" ); document.write( "Substitute:
\n" ); document.write( "-x + (5x+13) = 1
\n" ); document.write( "4x= -12
\n" ); document.write( "x = -3
\n" ); document.write( "------
\n" ); document.write( "Solve for \"y\":
\n" ); document.write( "y = 5x+13
\n" ); document.write( "y = 5*-3+13
\n" ); document.write( "y = -2
\n" ); document.write( "----------
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H \n" ); document.write( "

\n" );