document.write( "Question 776115: How do you solve by using elimination with 2x-4y=28 4x=17-5y \n" ); document.write( "

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How do you solve by using elimination with 2x-4y=28 4x=17-5y
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\n" ); document.write( "we have two equations in two unknowns
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\n" ); document.write( "2x = 4y+28
\n" ); document.write( "divide both sides of = by 2
\n" ); document.write( "x = 2y +14
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\n" ); document.write( "Substitute for x in second equation
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\n" ); document.write( "4*(2y+14) = 17 -5y
\n" ); document.write( "8y +56 = 17 -5y
\n" ); document.write( "13y = -39
\n" ); document.write( "y = -3
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\n" ); document.write( "2x -4*(-3) = 28
\n" ); document.write( "2x +12 = 28
\n" ); document.write( "2x = 16
\n" ); document.write( "x = 8
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\n" ); document.write( "x = 8, y = -3
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