document.write( "Question 652119: Find the point of intersection of the pair of straight lines\r
\n" ); document.write( "\n" ); document.write( "8x + 8y=32
\n" ); document.write( "−9x + 7y= 4
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Algebra.Com's Answer #407904 by shweta(56)\"\" \"About 
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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)
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