document.write( "Question 40822: Solve the system by elimination. If the system is inconsistent or has dependent equations, say so.\r
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document.write( "-7x + 5y = -20\r
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document.write( "-3x - 2y = 8 \n" );
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Algebra.Com's Answer #26231 by fractalier(6550)![]() ![]() You can put this solution on YOUR website! From \n" ); document.write( "-7x + 5y = -20 \n" ); document.write( "-3x - 2y = 8 \n" ); document.write( "let's multiply the top one by 2 and the bottom one by five...then add them...we get \n" ); document.write( "-14x + 10y = -40 \n" ); document.write( "-15x - 10y = 40 \n" ); document.write( "now add them to get \n" ); document.write( "-29x = 0 and \n" ); document.write( "x = 0 \n" ); document.write( "then \n" ); document.write( "y = -4 \n" ); document.write( "Solution is (0, -4) \n" ); document.write( " |