document.write( "Question 916125: Solve the following system.\r
\n" ); document.write( "\n" ); document.write( "x+(1/3y)+z=13
\n" ); document.write( "(1/2x)-y+(1/3z)=-2
\n" ); document.write( "x+(1/2y)-(1/3z)=2
\n" ); document.write( "

Algebra.Com's Answer #555914 by mananth(16946)\"\" \"About 
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x+(1/3y)+z=13
\n" ); document.write( "(1/2x)-y+(1/3z)=-2
\n" ); document.write( "x+(1/2y)-(1/3z)=2\r
\n" ); document.write( "\n" ); document.write( "Take LCM and simplify the equations to eliminate the denominators\r
\n" ); document.write( "\n" ); document.write( "3 x + 1 y + 3 z = 39 -------------- 1
\n" ); document.write( "3 x + -6 y 2 z = -12 -------------- 2
\n" ); document.write( "6 x + 3 y + -2 z = 12 -------------- 3
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\n" ); document.write( "consider equation 1 &2 Eliminate y
\n" ); document.write( "Multiply 1 by 6 -5
\n" ); document.write( "Multiply 2 by 1 4
\n" ); document.write( "we get
\n" ); document.write( "18 x + 6 y + 18 z = 234
\n" ); document.write( "3 x + -6 y + 2 z = -12
\n" ); document.write( "Add the two
\n" ); document.write( "21 x + 0 y + 20 z = 222 ------------- 4
\n" ); document.write( "consider equation 2 & 3 Eliminate y
\n" ); document.write( "Multiply 2 by 1
\n" ); document.write( "Multiply 3 by 2
\n" ); document.write( "we get
\n" ); document.write( "3 x + -6 y + 2 z = -12
\n" ); document.write( "12 x + 6 y + -4 z = 24
\n" ); document.write( "Add the two
\n" ); document.write( "15 x + 0 y + -2 z = 12 -------------5 5
\n" ); document.write( "Consider (4) & (5) Eliminate x
\n" ); document.write( "Multiply 4 by -15
\n" ); document.write( "Multiply (5) by 21
\n" ); document.write( "we get
\n" ); document.write( "-315 x + -300 z = -3330
\n" ); document.write( "315 x + -42 z = 252
\n" ); document.write( "Add the two
\n" ); document.write( "0 x + -342 z = -3078
\n" ); document.write( "/ -342
\n" ); document.write( "z = 9
\n" ); document.write( "15 x + -2 z= 12
\n" ); document.write( "15 x + -18 = 12
\n" ); document.write( " x = 2
\n" ); document.write( "Plug x & z in eq (1)
\n" ); document.write( "3 x + 1 y + 3 z = 39 -------------- 1
\n" ); document.write( " 6 + 1 y + 27 = 39
\n" ); document.write( " 1 y = 6
\n" ); document.write( " y = 6
\n" ); document.write( " x= 2 y= 6 z= 9 \r
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