document.write( "Question 983898: -16n+12=39-7n\r
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document.write( "My question is what is the rule for combining the variable.
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document.write( "If I +7 I get -11 but if I =16 I then get +11
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document.write( "There must be a rule I don't know...please help!!
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Algebra.Com's Answer #604683 by Timnewman(323)![]() ![]() You can put this solution on YOUR website! Hi dear! \n" ); document.write( "The rule of bringing these variables states that if the the variable carries positive sign (+),subtract (-) the variable from both side;and if the variable carries nagative sign,add the variable to both side of the equation. \n" ); document.write( "Applying the rule to the solution of your problem, \n" ); document.write( "-16n+12=39-7n \n" ); document.write( "since -7n is nagative,add 7n to both sides \n" ); document.write( "7n-16n+12=39-7n+7n \n" ); document.write( "Your equation becomes \n" ); document.write( "-8n+12=39 \n" ); document.write( "also,since 12 is positive,subtract it from bothsides \n" ); document.write( "-8n+12-12=39-12 \n" ); document.write( "Which becomes \n" ); document.write( "-8n=27 \n" ); document.write( "IS THAT OK? \n" ); document.write( " |