document.write( "Question 150192: Solve the following system of equations. If the system cannot be solved, state that it cannot be solved and explain why.
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document.write( "3x-2y=4
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document.write( "2x-5y=21\r
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Algebra.Com's Answer #110229 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! 3x-2y=4 \n" ); document.write( "2x-5y=21 \n" ); document.write( "----------- \n" ); document.write( "Multiply eqn 1 by 2, and eqn 2 by 3 \n" ); document.write( "6x -4y = 8 \n" ); document.write( "6x -15y = 63 \n" ); document.write( "Subtract 2 from 1 \n" ); document.write( "0x +11y = -55 \n" ); document.write( "y = -5 \n" ); document.write( "Sub for y into either eqn \n" ); document.write( "3x -2*(-5) = 4 \n" ); document.write( "3x + 10 = 4 \n" ); document.write( "3x = -6 \n" ); document.write( "x = -2 \n" ); document.write( "Both check \n" ); document.write( " |