document.write( "Question 1169747: solve the following pair of simultaneous equations.
\n" ); document.write( "3/5x - 4y = -1
\n" ); document.write( "0.8x - 3.5y = 1/2 \n" ); document.write( "

Algebra.Com's Answer #794578 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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solve the following pair of simultaneous equations.
\n" ); document.write( "3/5x - 4y = -1
\n" ); document.write( "0.8x - 3.5y = 1/2
\n" ); document.write( "Get rid of these annoying numbers, multiply both eq by 10
\n" ); document.write( "6x - 40y = -10
\n" ); document.write( "8x - 35y = 5
\n" ); document.write( "multiply 1st eq by 8, the 2nd eq by 6
\n" ); document.write( "48x - 320y = -80
\n" ); document.write( "48x - 210y = 20
\n" ); document.write( "------------------subtraction eliminates x, find y
\n" ); document.write( "0 - 110y = -100
\n" ); document.write( "multiply by -1
\n" ); document.write( "110y = 100
\n" ); document.write( "y = 100/110
\n" ); document.write( "y = $\"10%2F11\"$
\n" ); document.write( "find x
\n" ); document.write( "8x - 35( $\"10%2F11\"$ = 5
\n" ); document.write( "8x - $\"350%2F11\"$ = 5
\n" ); document.write( "8x = $\"55%2F11\"$ + $\"350%2F11\"$
\n" ); document.write( "8x = $\"405%2F11\"$
\n" ); document.write( "x = $\"405%2F88\"$
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "Check using the 2nd original equation, using a calc
\n" ); document.write( ".8( $\"405%2F88\"$ ) - 3.5( $\"10%2F11\"$ ) = .5
\n" ); document.write( " \n" ); document.write( "

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