document.write( "Question 1044177: solve the system\r
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document.write( "x-3y=2\r
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document.write( "-x+2y=0 \n" );
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Algebra.Com's Answer #659442 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! x-3y=2 \n" ); document.write( "-x+2y=0. When you have two equations where one variable is exactly opposite in both equations, you add them and that variable disappears. \n" ); document.write( "When you add these two, you get \n" ); document.write( "-y=2 \n" ); document.write( "y=-2 \n" ); document.write( "substitute into one equation to get x \n" ); document.write( "x-(-6)=2 \n" ); document.write( "x+6=-2 \n" ); document.write( "x=-4 \n" ); document.write( "--------- \n" ); document.write( "check by trying both in the other equation -(-4)+(2)(-2)=0 \n" ); document.write( "checks \n" ); document.write( "(-4,-2) \n" ); document.write( " |