document.write( "Question 155407: Hello...um i need to find the Value Of X and Y\r
\n" ); document.write( "\n" ); document.write( "4x=-5y+40
\n" ); document.write( " x=-y+9\r
\n" ); document.write( "\n" ); document.write( "i know itz pretty easy but i kinda forget everything during the summer...can u plz help me..it will b greatly appreciated =]
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Algebra.Com's Answer #114449 by checkley77(12844)\"\" \"About 
You can put this solution on YOUR website!
4x=-5y+40
\n" ); document.write( " x=-y+9 MULTIPLY THIS EQUATION BY -4 7 ADD.
\n" ); document.write( "-4X=4Y-36
\n" ); document.write( "4X=-5Y+40
\n" ); document.write( "--------------
\n" ); document.write( "0=-Y+4
\n" ); document.write( "Y=4 ANSWER.
\n" ); document.write( "X=-4+9
\n" ); document.write( "X=5 ANSWER.
\n" ); document.write( "PROOF:
\n" ); document.write( "4*5=-5*4+40
\n" ); document.write( "20=-20+40
\n" ); document.write( "20=20\r
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