document.write( "Question 629018: Need help. Use the method of substitution to solve the system of linear equations. 2x-y=8 9x-4y=36.
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document.write( "Can you please show work. \n" );
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Algebra.Com's Answer #395976 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Use the method of substitution to solve the system of linear equations. \n" ); document.write( "2x-y=8 \n" ); document.write( "9x-4y=36. \n" ); document.write( "----- \n" ); document.write( "Solve the 1st equation for \"y\": \n" ); document.write( "y = 2x-8 \n" ); document.write( "--- \n" ); document.write( "Substitute for \"y\" and solve for \"x\": \n" ); document.write( "9x - 4(2x-8) = 36 \n" ); document.write( "9x - 8x + 32 = 36 \n" ); document.write( "x = 4 \n" ); document.write( "---- \n" ); document.write( "Solve for \"y\": \n" ); document.write( " y = 2x-8 \n" ); document.write( "y = 2*4-8 \n" ); document.write( "y = 0 \n" ); document.write( "------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "=========== \n" ); document.write( " \n" ); document.write( " |