document.write( "Question 196175: 2x + y = 5
\n" ); document.write( "x - y = 4 \n" ); document.write( "

Algebra.Com's Answer #147072 by RAY100(1637) $\"\"$ $\"About$

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(1) 2x +y =5
\n" ); document.write( "(2) x-y = 4 or y= (x-4)
\n" ); document.write( "substitute into (1)
\n" ); document.write( "2x + (x-4) =5
\n" ); document.write( "3x -4 =5
\n" ); document.write( "3x =9
\n" ); document.write( "x=3,,,ANSWER
\n" ); document.write( "substitute into (2)
\n" ); document.write( "y = (3) -4 = (-1) = y,,,,ANSWER
\n" ); document.write( ".
\n" ); document.write( "checking
\n" ); document.write( "(1) 2(3) +(-1) = 6-1 =5,,,,,ok
\n" ); document.write( "(2) (3) -(-1) = 3+1 = 4,,,,,ok \n" ); document.write( "

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