document.write( "Question 282373: How do I solve the following using the substitution steps? \r
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document.write( "5x+2y=7
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document.write( "y=x-7\r
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document.write( "Thank you. TJ \n" );
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Algebra.Com's Answer #205003 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! This not a word problem. \n" ); document.write( "The only words were your question.\r \n" ); document.write( "\n" ); document.write( "plug (x-7) in for y in 5x+2y=7 to get \n" ); document.write( "5x+2*(x-7)=7 \n" ); document.write( "5x+2x-14=7 \n" ); document.write( "7x=21 \n" ); document.write( "x=3 \n" ); document.write( "y=x-7 \n" ); document.write( "y=3-7 \n" ); document.write( "y=-4 \n" ); document.write( "(3,-4) \n" ); document.write( " |