document.write( "Question 701681: I need all work and steps to this problem please. Solve by elimination method
\n" );
document.write( "2y=4x+10
\n" );
document.write( "Y=-1/2x-2
\n" );
document.write( "Is it a special system? Explain? \n" );
document.write( "
Algebra.Com's Answer #432552 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! 2y = 4x + 10 \n" ); document.write( "Y = -1/2x - 2 \n" ); document.write( "; \n" ); document.write( "It's better if we put these equations into the standard form \n" ); document.write( "-4x + 2y = 10 \n" ); document.write( " \n" ); document.write( ": \n" ); document.write( "Get rid of that annoying fraction, multiply the 2nd equation by 2 \n" ); document.write( "subtract the 1st equation \n" ); document.write( " x + 2y = -4 \n" ); document.write( "-4x + 2y = 10 \n" ); document.write( "---------------- subtraction eliminates y, find x \n" ); document.write( "5x = -14 \n" ); document.write( "x = -14/5 \n" ); document.write( "x = -2.8 \n" ); document.write( ": \n" ); document.write( "Find y, using the eq x + 2y = -4, replace x with -2.8 \n" ); document.write( "-2.8 + 2y = -4 \n" ); document.write( "2y = -4 + 2.8 \n" ); document.write( "2y = -1.2 \n" ); document.write( "y = -1.2/2 \n" ); document.write( "y = -.6 \n" ); document.write( ": \n" ); document.write( "The solution is: x = -2.8, y = -.6 \n" ); document.write( ": \n" ); document.write( "; \n" ); document.write( "You can check that in the original equations, replace x and y, see if equality reigns supreme\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |