document.write( "Question 559409: I don't understand solving equations. The problem is:
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document.write( "3x+2y= -9
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document.write( "-10x+5y= -5
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Algebra.Com's Answer #363399 by mananth(16946)![]() ![]() You can put this solution on YOUR website! 3x+2y=-9 .............1 \n" ); document.write( "-10x+5y =-5 .............2 \n" ); document.write( "Eliminate y \n" ); document.write( "multiply (1)by -5 \n" ); document.write( "Multiply (2) by 2 \n" ); document.write( "-15x-10y=45 \n" ); document.write( "-20x+10 y=-10 \n" ); document.write( "Add the two equations \n" ); document.write( "-35x=35 \n" ); document.write( "/ -35 \n" ); document.write( "x = -1 \n" ); document.write( "plug value of x in (1) \n" ); document.write( "3 x + 2 y = -9 \n" ); document.write( "-3 + 2 y = -9 \n" ); document.write( " 2 y = -9 + 3 \n" ); document.write( " 2 y = -6 \n" ); document.write( " y = -3 \n" ); document.write( " |