document.write( "Question 1042629: solve by addition method. I am really good at adding 2 equations usually but 3 is hectic, everytime I do one the program tells me its wrong.\r
\n" ); document.write( "\n" ); document.write( "2x-y+z=1
\n" ); document.write( "3x-3y+4z=5
\n" ); document.write( "4x-2y+3z=4\r
\n" ); document.write( "\n" ); document.write( "Help would be very much appreciate. I am not getting it. \n" ); document.write( "

Algebra.Com's Answer #657635 by MathTherapy(10553) $\"\"$ $\"About$

You can put this solution on YOUR website!
solve by addition method. I am really good at adding 2 equations usually but 3 is hectic, everytime I do one the program tells me its wrong.\r
\n" ); document.write( "\n" ); document.write( "2x-y+z=1
\n" ); document.write( "3x-3y+4z=5
\n" ); document.write( "4x-2y+3z=4\r
\n" ); document.write( "\n" ); document.write( "Help would be very much appreciate. I am not getting it.
\n" ); document.write( "


\n" );
document.write( "Multiply eq (i) by - 2. Add this new equation to eq (iii) to ELIMINATE x and y, and get a value for z
\n" );
document.write( "Substitute the value for z into eq (ii) and simplify to get an equation in variables x and y
\n" );
document.write( "Substitute the value for z into eq (i), and subtract this equation in variables x and y from the above equation, in x and y to get the value of x
\n" );
document.write( "Substitute values for x and z into any of the 3 ORIGINAL equations to get the value of y.
\n" );
document.write( "Voila!! All done!\r
\n" );
document.write( "\n" );
document.write( "By the way, you should get:  \n" );
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