document.write( "Question 385405: Can I please get some help with this problem.
\n" );
document.write( "Solve the following system of two linear equations. i need if there is a solution please. I need assistance with the addidtin method please..
\n" );
document.write( "5x-6y= 40
\n" );
document.write( "3x+2y=8
\n" );
document.write( "Thank you so much..
\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #272697 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! 5x-6y= 40 \n" ); document.write( "3x+2y=8 \n" ); document.write( ". \n" ); document.write( "Multiply both sides of the bottom equation by 3 then combine both equations: \n" ); document.write( "5x-6y= 40 \n" ); document.write( "9x+6y= 24 \n" ); document.write( "---------- \n" ); document.write( "14x = 64 \n" ); document.write( "x = 64/14 \n" ); document.write( "x = 32/7 \n" ); document.write( ". \n" ); document.write( "plug the above into the top equation and solve for y: \n" ); document.write( "5x-6y= 40 \n" ); document.write( "5(32/7)-6y= 40 \n" ); document.write( "5(32)-42y= 280 \n" ); document.write( "160-42y= 280 \n" ); document.write( "-42y= 120 \n" ); document.write( "y = -120/42 \n" ); document.write( "y = -60/21 \n" ); document.write( "y = -20/7 \n" ); document.write( ". \n" ); document.write( "Answer: (x,y) = (32/7, -20/7)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |