document.write( "Question 375139: Solve the system of equations by graphing. Then classify the system.
\n" ); document.write( "6x-y=21
\n" ); document.write( "6x=7y=-3
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Algebra.Com's Answer #266814 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
1.\"6x-y=21\"
\n" ); document.write( "2.\"6x%2B7y=-3\"
\n" ); document.write( "Subtract eq. 1 from eq. 2,
\n" ); document.write( "\"6x%2B7y-6x%2By=-3-21\"
\n" ); document.write( "\"8y=-24\"
\n" ); document.write( "\"highlight%28y=-3%29\"
\n" ); document.write( "Use either equation to solve for \"x\",
\n" ); document.write( "\"6x%2B3=21\"
\n" ); document.write( "\"6x=18\"
\n" ); document.write( "\"highlight%28x=3%29\"
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