document.write( "Question 1107839: Solve the system of equations using substitution for:
\n" ); document.write( "y = -5x + 22 and 2x = 0 +4y\r
\n" ); document.write( "\n" ); document.write( "Show solution to the system as a pair of coordinates.
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Algebra.Com's Answer #722858 by Collinwilfixyouuprealnice(44)\"\" \"About 
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2x-y=9;3x+4y=-14
\n" ); document.write( "Solution :
\n" ); document.write( " {x,y} = {2,-5} \r
\n" ); document.write( "\n" ); document.write( "Solve by Substitution :
\n" ); document.write( " Solve equation for the variable y
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\n" ); document.write( " y = 2x - 9\r
\n" ); document.write( "\n" ); document.write( " Plug this in for variable y in equation \r
\n" ); document.write( "\n" ); document.write( " 3x + 4•(2x-9) = -14
\n" ); document.write( " 11x = 22
\n" ); document.write( "Solve equation for the variable x \r
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\n" ); document.write( "\n" ); document.write( " 11x = 22 \r
\n" ); document.write( "\n" ); document.write( " x = 2
\n" ); document.write( " By now we know this much :\r
\n" ); document.write( "\n" ); document.write( " x = 2
\n" ); document.write( " y = 2x-9
\n" ); document.write( " Use the x value to solve for y \r
\n" ); document.write( "\n" ); document.write( " y = 2(2)-9 = -5
\n" ); document.write( "Solution :
\n" ); document.write( " {x,y} = {2,-5} \r
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