document.write( "Question 652119: Find the point of intersection of the pair of straight lines\r
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document.write( "8x + 8y=32
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document.write( "−9x + 7y= 4 \n" );
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Algebra.Com's Answer #407904 by shweta(56)![]() ![]() ![]() You can put this solution on YOUR website! 8x + 8y=32 ..(1) \n" ); document.write( "-9x + 7y=4 ..(2) \n" ); document.write( "Multiply equation 1 by 7 and equation 2 with 8 \n" ); document.write( "8x + 8y=32 *7 \n" ); document.write( "-9x + 7y=4 *8 \n" ); document.write( "56x + 56y= 224 \n" ); document.write( "-72x + 56y=32 \n" ); document.write( "Subtract both the equations \n" ); document.write( "56x-(-72x) +56y -56y= 224-32 \n" ); document.write( "56x+ 72x= 192 \n" ); document.write( "128x= 192 \n" ); document.write( " x= 192/128 \n" ); document.write( " x= 3/2 \n" ); document.write( "Substitute the value of x in equation 1 \n" ); document.write( "8x+ 8y=32 \n" ); document.write( "8*(3/2) + 8y= 32 \n" ); document.write( "12 + 8y= 32 \n" ); document.write( " 8y= 32-12 \n" ); document.write( " 8y= 20 \n" ); document.write( " y= 20/8 \n" ); document.write( " y= 5/2 \n" ); document.write( "Point of intersection of these two lines is ( 3/2,5/2) \n" ); document.write( " |