document.write( "Question 1001791: ×=3
\n" ); document.write( "×+y=9
\n" ); document.write( "2×-y+2z=18 \n" ); document.write( "

Algebra.Com's Answer #618879 by MathLover1(20850) $\"\"$ $\"About$

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\n" ); document.write( "\n" ); document.write( " $\"x=3\"$ .....eq.1
\n" ); document.write( " $\"x%2By=9\"$ .....eq.2
\n" ); document.write( " $\"2x-y%2B2z=18\"$ .....eq.3
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\n" ); document.write( "\n" ); document.write( " $\"x%2By=9\"$ .....eq.2..........substitute $\"3\"$ for $\"x\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"3%2By=9\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y=9-3\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y=6\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"2x-y%2B2z=18\"$ .....eq.3, substitute $\"3\"$ for $\"x\"$ and substitute $\"6\"$ for $\"y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"2%2A3-6%2B2z=18\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"6-6%2B2z=18\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"2z=18\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"z=18%2F2\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"z=9\"$ \r
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