document.write( "Question 120848: 2x+y=7
\n" ); document.write( "2x-2y=-8\r
\n" ); document.write( "\n" ); document.write( "Could someone please help me? \n" ); document.write( "

Algebra.Com's Answer #88793 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
1. $\"2x%2By=7\"$
\n" ); document.write( "2. $\"2x-2y=-8\"$
\n" ); document.write( "Use equation 1 to get 2x in terms of y and then substitute into equation 2.
\n" ); document.write( " $\"2x%2By=7\"$
\n" ); document.write( " $\"2x=7-y\"$
\n" ); document.write( "2. $\"2x-2y=-8\"$
\n" ); document.write( " $\"%287-y%29-2y=-8\"$
\n" ); document.write( " $\"7-3y=-8\"$
\n" ); document.write( " $\"-3y=-15\"$
\n" ); document.write( " $\"highlight%28y=5%29\"$
\n" ); document.write( "Then from 1,
\n" ); document.write( " $\"2x%2By=7\"$
\n" ); document.write( " $\"2x%2B5=7\"$
\n" ); document.write( " $\"2x=2\"$
\n" ); document.write( " $\"highlight%28x=1%29\"$
\n" ); document.write( "Check your answers.
\n" ); document.write( "1. $\"2x%2By=7\"$
\n" ); document.write( " $\"2%281%29%2B5=7\"$
\n" ); document.write( " $\"2%2B5=7\"$
\n" ); document.write( " $\"7=7\"$
\n" ); document.write( "True statement.
\n" ); document.write( "2. $\"2x-2y=-8\"$
\n" ); document.write( " $\"2%281%29-2%285%29=-8\"$
\n" ); document.write( " $\"2-10=-8\"$
\n" ); document.write( " $\"-8=-8\"$
\n" ); document.write( "True statement.
\n" ); document.write( "Your answers led to true statements.
\n" ); document.write( "They are good answers. \n" ); document.write( "

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