document.write( "Question 165491: Estimate the solution by graphing. then use the addition method to solve the system.
\n" ); document.write( "y=x-7
\n" ); document.write( "x+y=3 \n" ); document.write( "

Algebra.Com's Answer #121978 by jojo14344(1513) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"y=x-7\"$ ---> EQN 1
\n" ); document.write( " $\"x%2By=3\"$ ---> EQN 2
\n" ); document.write( "Combine similar terms in EQN 1 then add to EQN 2:
\n" ); document.write( " $\"y-cross%28x%29=-7\"$
\n" ); document.write( " $\"cross%28x%29%2By=3\"$
\n" ); document.write( "= $\"2y=-4\"$ -----> $\"cross%282%29y%2Fcross%282%29=-cross%284%292%2Fcross%282%29\"$
\n" ); document.write( "= $\"highlight%28y=-2%29\"$
\n" ); document.write( "For x:
\n" ); document.write( "via EQN 1: $\"-2=x-7\"$ ---> $\"-2%2B7=x\"$ ---> $\"highlight%28x=5%29\"$
\n" ); document.write( "See graph:
\n" ); document.write( "

--- see both lines interesect at points(5,-2)
\n" ); document.write( "*Remember: green line ---> $\"x%2By=3\"$
\n" ); document.write( "Red line ----> $\"y=x-7\"$
\n" ); document.write( "Thank you,
\n" ); document.write( "Jojo\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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