document.write( "Question 12985: Hello:\r
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document.write( "I really need your help. I have tried all possible ways to solve this equation but I am confused on how to start to solve it. Here is the question:\r
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document.write( "Find the point of intersection of the given straight lines.\r
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document.write( "x - 4y = -2
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document.write( "x + 2y = 4\r
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document.write( "Please help me with this problem. Thank you. \n" );
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Algebra.Com's Answer #6531 by sabanasir(22)![]() ![]() ![]() You can put this solution on YOUR website! hmm it goes this way.... \n" ); document.write( "the idea first is to get a combined equation of the two either by adding them or subtracting them like...: \n" ); document.write( "i can easily subtract the two equations: \n" ); document.write( "(1) x-4y=-2 \n" ); document.write( "(2) x+2y=4 \n" ); document.write( "subtracting will get us free from one variable 'x' cancelled out. \n" ); document.write( "+x-4y=-2 \n" ); document.write( "+x+2y=4 \n" ); document.write( "(-) \n" ); document.write( "__________ \n" ); document.write( "-6y=-6 \n" ); document.write( "6y=6 \n" ); document.write( "y=1 \n" ); document.write( "okkkk now v get the value of y as 1. \n" ); document.write( "we cud put y's value in either of the equation to get the value of 'x' \n" ); document.write( "e.g i put it in (1) \n" ); document.write( "x-4y=-2 \n" ); document.write( "put y=1 \n" ); document.write( "x-4(1)=-2 \n" ); document.write( "x-4=-2 \n" ); document.write( "x=-2+4 \n" ); document.write( "x=2 \n" ); document.write( "so the intersecting points are (x,y)=(2,1) \n" ); document.write( " \n" ); document.write( " |