document.write( "Question 1054913: 5x+2y=14
\n" ); document.write( "Y-6z=-15
\n" ); document.write( "X+2y+z=0 \n" ); document.write( "

Algebra.Com's Answer #670136 by Alan3354(69443) $\"\"$ $\"About$

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5x+2y=14
\n" ); document.write( "Y-6z=-15 --> y = 6z - 15
\n" ); document.write( "X+2y+z=0
\n" ); document.write( "-----------
\n" ); document.write( "Sub for y in eqns 1 & 3
\n" ); document.write( "----
\n" ); document.write( "5x+2y=14
\n" ); document.write( "5x + 2(6z-15) = 14
\n" ); document.write( "5x + 12z = 44 Eqn A
\n" ); document.write( "----
\n" ); document.write( "X+2y+z=0
\n" ); document.write( "x + 12z-30 + 12z = 0
\n" ); document.write( "x + 24z = 30
\n" ); document.write( "5x + 120z = 150 (times 5)
\n" ); document.write( "5x + 12z = 44 Eqn A
\n" ); document.write( "------------------------------------- Subtract
\n" ); document.write( "108z = 106
\n" ); document.write( "z = 53/54
\n" ); document.write( "-----------
\n" ); document.write( "Solve for y.
\n" ); document.write( "Solve for x.
\n" ); document.write( " \n" ); document.write( "

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