document.write( "Question 178872: Solve each system by addition\r
\n" ); document.write( "\n" ); document.write( "2x = 2 - y
\n" ); document.write( "3x + y = -1\r
\n" ); document.write( "\n" ); document.write( "Thanks \n" ); document.write( "

Algebra.Com's Answer #133854 by jojo14344(1513) $\"\"$ $\"About$

You can put this solution on YOUR website!

\n" ); document.write( "Arrange eqns:
\n" ); document.write( " $\"2x+=+2+-+y\"$ , EQN 1
\n" ); document.write( " $\"3x+%2B+y+=+-1\"$ , EQN 2\r
\n" ); document.write( "\n" ); document.write( " $\"system%28-2x-y=-2%2C3x%2By=-1%29\"$ ---> $\"system%28-2x-cross%28y%29=-2%2C3x%2Bcross%28y%29=-1%2Cx=-3%29\"$
\n" ); document.write( "subst. $\"highlight%28x=-3%29\"$ in EQN 2:
\n" ); document.write( " $\"3%28-3%29%2By=-1\"$
\n" ); document.write( " $\"-9%2By=-1\"$
\n" ); document.write( " $\"y=-1%2B9\"$
\n" ); document.write( " $\"highlight%28y=8%29\"$
\n" ); document.write( "we'll see the graph:
\n" ); document.write( "
\n" ); document.write( "Thank you,
\n" ); document.write( "Jojo \n" ); document.write( "

\n" );