document.write( "Question 283894:  how do I solve the following:
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document.write( "2x = 2 - y
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document.write( "3x + y = -1 \n" );
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| Algebra.Com's Answer #206034 by richwmiller(17219)     You can put this solution on YOUR website! first thing is rearrange the equations so that they are in ax+by=c order \n" ); document.write( "2x-y=2 \n" ); document.write( "3x+y=-1 \n" ); document.write( "just add the two equations \n" ); document.write( "5x=1 \n" ); document.write( "x=1/5 \n" ); document.write( "substitute into either equation \n" ); document.write( "2*1/5-y=2 \n" ); document.write( "2/5-y=2 \n" ); document.write( "subtract2/5 from both sides \n" ); document.write( "-y=2-2/5 \n" ); document.write( "-y=1 3/5 \n" ); document.write( "y=-1 3/5= -8/5 \n" ); document.write( " \n" ); document.write( " |