document.write( "Question 59720: Solve the system: x - 5y = -9
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document.write( " x = y - 1
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document.write( "One of the solutions is :\r
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document.write( "a) x = 1
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document.write( "b) x = -1
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document.write( "c) y = -2
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document.write( "d) y = 2
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document.write( "e) none of the above
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document.write( "
Algebra.Com's Answer #41020 by funmath(2933)![]() ![]() ![]() You can put this solution on YOUR website! Solve the system: x - 5y = -9 \n" ); document.write( " x = y - 1 \n" ); document.write( "One of the solutions is :\r \n" ); document.write( "\n" ); document.write( "a) x = 1 \n" ); document.write( "b) x = -1 \n" ); document.write( "c) y = -2 \n" ); document.write( "d) y = 2 \n" ); document.write( "e) none of the above \n" ); document.write( ": \n" ); document.write( "Substitute y-1 in for x in the first equation and solve for y: \n" ); document.write( "(y-1)-5y=-9 \n" ); document.write( "-4y-1=-9 \n" ); document.write( "-4y-1+1=-9+1 \n" ); document.write( "-4y=-8 \n" ); document.write( "-4y/-4=-8/-4 \n" ); document.write( "y=2 \n" ); document.write( "Substitute 2 in for y in the second equation and solve for x. \n" ); document.write( "x=2-1 \n" ); document.write( "x=1 \n" ); document.write( "The solution is (x,y)=(1,2) \n" ); document.write( "You need both an x and y for a solution. so the answer is (a and d) or e. \n" ); document.write( "Happy Calculating!!! \n" ); document.write( " |