document.write( "Question 160050: x+5y-z=16
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document.write( "3x-3y+2z=12
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document.write( "2x+4y+z=20 \r
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document.write( "Please help me solve this. I have tried and keep getting a decimil point that doesn't fit in. \n" );
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Algebra.Com's Answer #118061 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! add 1st eqn and 3rd eqn __ 3x+9y=36 __ x+3y=12 __ x=12-3y\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "multiply 1st eqn by 2, then add 2nd eqn __ 5x+7y=44\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "substituting __ 5(12-3y)+7y=44 __ 60-8y=44 __ y=2\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "substituting __ x=12-3(2) __ x=6\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "substituting __ (6)+5(2)-z=16 __ z=0 \n" ); document.write( " |