document.write( "Question 910255: if four is added to a certain number, the result will be the same if twice the number is subtracted to 31. what is the number? \n" ); document.write( "
Algebra.Com's Answer #552333 by Lenzky(18)\"\" \"About 
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Let x be the number.
\n" ); document.write( "x+4 = 31-2x
\n" ); document.write( "combine similar terms
\n" ); document.write( "x+2x = 31-4
\n" ); document.write( "3x = 27 divide both side by 3 to get the value of x
\n" ); document.write( "x = 9\r
\n" ); document.write( "\n" ); document.write( "CHECKING:
\n" ); document.write( "9+4 = 31-(2)(9)
\n" ); document.write( "13 = 31-18
\n" ); document.write( "13 = 13
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