document.write( "Question 12407: Dear Tutor,
\n" ); document.write( " Could you please help me with this problem?
\n" ); document.write( "I'm not sure if I selected the right topic.
\n" ); document.write( "It says\" Solve the system using any algebraic method.
\n" ); document.write( "(here is the problem.)
\n" ); document.write( " x + 4y + z = 12
\n" ); document.write( " y - 3z = -7
\n" ); document.write( " z = 3
\n" ); document.write( "Thank you so much for helping me.
\n" ); document.write( "
\n" ); document.write( " Truly,
\n" ); document.write( " Kat \n" ); document.write( "
Algebra.Com's Answer #6308 by slksil001(7)\"\" \"About 
You can put this solution on YOUR website!
\r
\n" ); document.write( "\n" ); document.write( " x + 4y + z = 12.........(A)
\n" ); document.write( " y - 3z = -7 ............(B)
\n" ); document.write( " z = 3 ..................(C)\r
\n" ); document.write( "\n" ); document.write( " subst (C) in B
\n" ); document.write( " y= -7+3(3)
\n" ); document.write( " =2 ................(D)\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "subt. (D)&(C) in (A)
\n" ); document.write( " x+4(2)+3 = 12
\n" ); document.write( " =12-8-3
\n" ); document.write( " =1\r
\n" ); document.write( "\n" ); document.write( "after you can check that your X ,Y & Z are correct by plugging them back in the equation (A):
\n" ); document.write( "
\n" ); document.write( " 1 + 8 + 3 = 12
\n" ); document.write( " 0 = 0
\n" ); document.write( "
\n" ); document.write( " \n" ); document.write( "
\n" );