document.write( "Question 518315: x+y=7
\n" ); document.write( "x-y=5
\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #345119 by Maths68(1474) $\"\"$ $\"About$

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x+y=7......(1)
\n" ); document.write( "x-y=5......(2)
\n" ); document.write( "Add (1) and (2)
\n" ); document.write( "x+y=7
\n" ); document.write( "x-y=5
\n" ); document.write( "--------
\n" ); document.write( "2x=12
\n" ); document.write( "2x/2=12/2
\n" ); document.write( "x=6
\n" ); document.write( "Put the value of x in (1)
\n" ); document.write( "x+y=7
\n" ); document.write( "6+y=7
\n" ); document.write( "y=7-6
\n" ); document.write( "y=1\r
\n" ); document.write( "\n" ); document.write( "(x,y)=(6,1)
\n" ); document.write( "Check
\n" ); document.write( "========
\n" ); document.write( "x+y=7
\n" ); document.write( "Put the value of x and y in above equation
\n" ); document.write( "6+1=7
\n" ); document.write( "7=7\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "x-y=5
\n" ); document.write( "Put the value of x and y in above equation
\n" ); document.write( "6-1=5
\n" ); document.write( "5=5 \n" ); document.write( "

\n" );