document.write( "Question 293853: Solve by using the elimination method.
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document.write( "2r-9s=-10
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document.write( "9r+2s=40\r
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document.write( "What is the solution of the system ? Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
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document.write( "A) the solution is_______(type an ordered pair. use integers or fractions for any numbers in the expression.)
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document.write( "B)There are infinitely number of solutions.
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document.write( "C) There is no solution.\r
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document.write( "Please help me with this mess!!!!!LOL \n" );
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Algebra.Com's Answer #212013 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! A) r=4 s=2 \n" ); document.write( "(4,2) \n" ); document.write( "2r-9s=-10 \n" ); document.write( "9r+2s=40 \n" ); document.write( "Multiply equation #1 by 2 \n" ); document.write( "2*(2r-9s=-10) \n" ); document.write( "Multiply equation #2 by 9 \n" ); document.write( "9*(9r+2s=40)\r \n" ); document.write( "\n" ); document.write( "Add them \n" ); document.write( "s is gone \n" ); document.write( "Solve for r\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |