document.write( "Question 325367: Solve by substitution:\r
\n" ); document.write( "\n" ); document.write( "3x-y=5
\n" ); document.write( "-6x +2y=1\r
\n" ); document.write( "\n" ); document.write( "I dont know how to start this. Can you help me solve this? \n" ); document.write( "
Algebra.Com's Answer #233003 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
Solve by substitution:
\n" ); document.write( "3x-y=5
\n" ); document.write( "-6x +2y=1
\n" ); document.write( "===============
\n" ); document.write( "Solve the 1st equation for \"y\":
\n" ); document.write( "y = 3x-5
\n" ); document.write( "----
\n" ); document.write( "Substitute that value for \"y\" into the 2nd equation and solve for \"x\":
\n" ); document.write( "---
\n" ); document.write( "-6x + 2(3x-5) = 1
\n" ); document.write( "-6x+6x-10 = 2
\n" ); document.write( "-10 = 2
\n" ); document.write( "---
\n" ); document.write( "That is a contradiction and tells you there
\n" ); document.write( "is no solution for the system of equations.
\n" ); document.write( "---
\n" ); document.write( "Note: If you would graph the two equations
\n" ); document.write( "you would see the graphs are parallel; they
\n" ); document.write( "have no point in common.
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( " \n" ); document.write( "
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