document.write( "Question 938249: Using the method of substitution to help solve for this equation.
\n" ); document.write( "3x-2y=-4
\n" ); document.write( "2x-y=-4 \n" ); document.write( "
Algebra.Com's Answer #571561 by ankor@dixie-net.com(22740)\"\" \"About 
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Using the method of substitution to help solve for this equation.
\n" ); document.write( "3x - 2y = -4
\n" ); document.write( "2x - y = -4
\n" ); document.write( "add y and 4 to both sides and you have
\n" ); document.write( "2x + 4 = y
\n" ); document.write( "Replace y with (2x+4) in the first equation
\n" ); document.write( "3x - 2(2x+4) = -4
\n" ); document.write( "3x - 4x - 8 = -4
\n" ); document.write( "-x = -4 + 8
\n" ); document.write( "-x = 4
\n" ); document.write( "x has to be positive, multiply both sides by -1
\n" ); document.write( "x = -4
\n" ); document.write( "Find y
\n" ); document.write( "y = 2x + 4
\n" ); document.write( "y = 2(-4) + 4
\n" ); document.write( "y = -8 + 4
\n" ); document.write( "y = -4
\n" ); document.write( ":
\n" ); document.write( "Check in the first equation 3x - 2y = -4
\n" ); document.write( "3(-4) - 2(-4) = -4
\n" ); document.write( "-12 + 8 = -4 \n" ); document.write( "
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