document.write( "Question 44704: equations in three linear variables\r
\n" ); document.write( "\n" ); document.write( "6x-4y+5z=31
\n" ); document.write( "5x+2y+2z=13
\n" ); document.write( "x+y+z=2\r
\n" ); document.write( "\n" ); document.write( "wouldn't you multiply the second equation by 2?
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Algebra.Com's Answer #29634 by OHtutor(16)\"\" \"About 
You can put this solution on YOUR website!
no, you don't have to multiple because the equation doesn't have fractions.
\n" ); document.write( "You would try to move 2 of the varables to the right and work with2 of the variables.
\n" ); document.write( "6x=4y-5x+31
\n" ); document.write( "2y=-5x-2z+13
\n" ); document.write( "y=(-5x-2z+13)/2
\n" ); document.write( "Now put the above equation into each of the other 2 equations left and then work just with x and z (it will be just a 2 variable equation after that)
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