document.write( "Question 992198: Twice a number minus a second number is -1. Twice the second number added to three times the first number is 9. Find the number. \n" ); document.write( "
Algebra.Com's Answer #611829 by lwsshak3(11628)\"\" \"About 
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Twice a number minus a second number is -1. Twice the second number added to three times the first number is 9. Find the number.\r
\n" ); document.write( "\n" ); document.write( "let x=number
\n" ); document.write( "let y=2nd number
\n" ); document.write( "2x-y=-1
\n" ); document.write( "y=-2x+1
\n" ); document.write( "plug in y for x\r
\n" ); document.write( "\n" ); document.write( "2(-2x+1)+3x=9
\n" ); document.write( "-4x+2+3x=9
\n" ); document.write( "x=7
\n" ); document.write( " number=7
\n" ); document.write( "
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