document.write( "Question 1023815: Solve the system by elimination.
\n" ); document.write( "-x-5y+z=17
\n" ); document.write( "-5x-5y+5z=5
\n" ); document.write( "2x+5y-3z=-10 \n" ); document.write( "

Algebra.Com's Answer #639385 by Alan3354(69443) $\"\"$ $\"About$

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Same problem, different numbers.
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\n" ); document.write( "Solve the system by elimination.
\n" ); document.write( "-4x-5y-z=18
\n" ); document.write( "-2x-5y-2z=12
\n" ); document.write( "-2x+5y+2z=4
\n" ); document.write( "-------------
\n" ); document.write( "Pick a variable to eliminate 1st.
\n" ); document.write( "All y terms have the same coefficient 5:
\n" ); document.write( "---
\n" ); document.write( "-4x-5y-z=18
\n" ); document.write( "-2x-5y-2z=12
\n" ); document.write( "------------------ Subtract
\n" ); document.write( "-2x + z = 6 Eqn A
\n" ); document.write( "---
\n" ); document.write( "-2x-5y-2z=12
\n" ); document.write( "-2x+5y+2z=4
\n" ); document.write( "--------------------- Add
\n" ); document.write( "-4x = 16
\n" ); document.write( "--> x = -4 ************
\n" ); document.write( "---
\n" ); document.write( "-2x + z = 6 Eqn A
\n" ); document.write( "--> z = -2 ************
\n" ); document.write( "---
\n" ); document.write( "-2x+5y+2z=4
\n" ); document.write( "--> y = 0 *************
\n" ); document.write( "====================
\n" ); document.write( "(-4,0,-2)
\n" ); document.write( " \n" ); document.write( "

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