document.write( "Question 633515: The question asks to solve these systems of equations: 3x + 5y – z = 2; -x – 8y + 3z = -6; 3z = 2x.
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Algebra.Com's Answer #398948 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "Hi,
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document.write( " 3x + 5y – z = 2 
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document.write( "-x – 8y + 3z = -6  |multipling 1st EQ by 8, 2nd by 5 and adding EQs to eliminate y
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document.write( " 24x - 8z = 16
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document.write( "-5x  +15z = -30
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document.write( "  19x + 7z = -14
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document.write( "    z = 2/3x
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document.write( "  19x + 14/3x = -14  ||Multiplying thru by 3 so as all denominators = 1
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document.write( "71x = -42
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document.write( "         x = -42/71 , z = -28/71  
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document.write( "substitute x and z into 1st EQ to find y =  \n" );
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