document.write( "Question 420755: THE EQUATION OF 2 lines xxx + 2 y = 3 , 4 x-y = 12 what are the coordinates of the point of intersections \n" ); document.write( "

Algebra.Com's Answer #293897 by mananth(16949) $\"\"$ $\"About$

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1 x + 2 y = 3 .............1
\n" ); document.write( "4 x + -1 y = 12 .............2
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\n" ); document.write( "multiply (1)by 1
\n" ); document.write( "Multiply (2) by 2
\n" ); document.write( "1 x + 2 y = 3
\n" ); document.write( "8 x + -2 y = 24
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\n" ); document.write( "Add the two equations
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\n" ); document.write( "9 x + 0 y = 27
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\n" ); document.write( "/ 9
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\n" ); document.write( "x = 3
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\n" ); document.write( "plug value of x In (1)
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\n" ); document.write( "1 x + 2 y = 3
\n" ); document.write( "3 + 2 y = 3
\n" ); document.write( " 2 y = 3 + -3
\n" ); document.write( " 2 y = 0
\n" ); document.write( " y = 0
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