document.write( "Question 1036662: This is my last question that I need an answer for. I tried many times but the answer was wrong.
\n" ); document.write( "3x + 2y =8
\n" ); document.write( "-x + y = 9
\n" ); document.write( "I have to solve using substitution, and can you also tell me why you did what you did
\n" ); document.write( "example:
\n" ); document.write( "\"In order to get this, you must first multiply by 2\" \n" ); document.write( "

Algebra.Com's Answer #651388 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
(1) $\"+3x+%2B+2y+=+8+\"$
\n" ); document.write( "(2) $\"+-x+%2B+y+=+9+\"$
\n" ); document.write( "--------------------
\n" ); document.write( "Add $\"+x+\"$ to both sides of (2)
\n" ); document.write( "(2) $\"+y+=+9+%2B+x+\"$
\n" ); document.write( "Substitute this result into (1)
\n" ); document.write( "(1) $\"+3x+%2B+2%2A%28+9+%2B+x+%29+=+8+\"$
\n" ); document.write( "(1) $\"+3x+%2B+18+%2B+2x+=+8+\"$
\n" ); document.write( "(1) $\"+5x+%2B+18+=+8+\"$
\n" ); document.write( "(1) $\"+5x+=+-10+\"$
\n" ); document.write( "(1) $\"+x+=+-2+\"$
\n" ); document.write( "---------------
\n" ); document.write( "Substitute this result into (2)
\n" ); document.write( "(2) $\"+-x+%2B+y+=+9+\"$
\n" ); document.write( "(2) $\"+-%28-2%29+%2B+y+=+9+\"$
\n" ); document.write( "(2) $\"+2+%2B+y+=+9+\"$
\n" ); document.write( "(2) $\"+y+=+7+\"$
\n" ); document.write( "----------------
\n" ); document.write( "check answers:
\n" ); document.write( "(1) $\"+3x+%2B+2y+=+8+\"$
\n" ); document.write( "(1) $\"+3%2A%28-2%29+%2B+2%2A7+=+8+\"$
\n" ); document.write( "(1) $\"+-6+%2B+14+=+8+\"$
\n" ); document.write( "(1) $\"+8+=+8+\"$
\n" ); document.write( "OK
\n" ); document.write( "(2) $\"+-x+%2B+y+=+9+\"$
\n" ); document.write( "(2) $\"+-%28-2%29+%2B+7+=+9+\"$
\n" ); document.write( "(2) $\"+2+%2B+7+=+9+\"$
\n" ); document.write( "(2) $\"+9+=+9+\"$
\n" ); document.write( "OK \n" ); document.write( "

\n" );