document.write( "Question 1056369: Systems with three variables (couldn't find the right category sorry)\r
\n" ); document.write( "\n" ); document.write( "Solve using elimination:
\n" ); document.write( "X+2y=2
\n" ); document.write( "2x+3y-z=-9
\n" ); document.write( "4x+2y+5z=1\r
\n" ); document.write( "\n" ); document.write( "I just need to know how to start it really. TIA!
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Algebra.Com's Answer #671513 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
Solve using elimination:
\n" ); document.write( "X+2y=2
\n" ); document.write( "2x+3y-z=-9
\n" ); document.write( "4x+2y+5z=1
\n" ); document.write( "-----
\n" ); document.write( "Since the 1st eqn has no z term, eliminate that 1st.
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\n" ); document.write( "10x+15y-5z=-45 -- 2nd eqn times 5
\n" ); document.write( "4x +2y + 5z =1
\n" ); document.write( "------------------------ Add
\n" ); document.write( "14x + 17y = -44
\n" ); document.write( "

\n" ); document.write( "Now it's 2 eqns in x & y.
\n" ); document.write( "Can you do the rest?
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