Homework Help Forum: 9th grade Math

Posted by Mike on Monday, November 2, 2009 at 7:46pm.

(7n-1)/(8)=6 Okay, I think I add 1 to both sides, so now I have.. (7n)/(8)=7 And then, to get n by itself I divide 7 into both sides, so now I have.. n/8=1 n=1 is what I get, but I'm not sure, could someone please check this for me?

• 9th grade Math - bobpursley, Monday, November 2, 2009 at 7:49pm

  No. Hang your head in shame :) Multiply both sides by 8 7n-1=48 add one to each side, then divide each side by 7

  
  

• 9th grade Math - Reiny, Monday, November 2, 2009 at 7:50pm

  No , first you multiply each side by 8 to get 7n - 1= 48 now add 1 to each side 7n = 49 divide both sides by 7 n = 7 check: in original ((7(7) -1 1)/6 = (49-1)/6 = 48/8 = 6 Check!!

  
  

• 9th grade Math - Mike, Monday, November 2, 2009 at 7:51pm

  Ohhh, thanks you very much, I wasn't sure which step I did first.:)

  
  

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