document.write( "Question 466805: Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this.
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document.write( "-5x – 7y = 25.5
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document.write( "-2x + 10y = -9
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Algebra.Com's Answer #320206 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. \n" ); document.write( "-5x – 7y = 25.5 \n" ); document.write( "-2x + 10y = -9 \n" ); document.write( "----------- \n" ); document.write( "Multiply thru 1st equation by -2 \n" ); document.write( "Multiply thru 2nd equation by -5 \n" ); document.write( "------- \n" ); document.write( "10x + 14y = -51 \n" ); document.write( "10x - 50y = 45 \n" ); document.write( "---- \n" ); document.write( "Subtract and solve for \"y\": \n" ); document.write( "64y = -96 \n" ); document.write( "y = -3/2 \n" ); document.write( "============== \n" ); document.write( "Solve for \"x\": \n" ); document.write( "10x + 14y = -51 \n" ); document.write( "10x + 14(-3/2) = -51 \n" ); document.write( "10x - 21 = -51 \n" ); document.write( "10x = 30 \n" ); document.write( "x = 3 \n" ); document.write( "--------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "==========================\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |