Homework Help: Math 012

Posted by amy on Saturday, January 31, 2009 at 11:23pm.

Can anyone help explain how to do this problem. i am not sure what im doing wrong. thanks

4(2n+1)=3(6n+3)+1

8n+4=18n+9+1
8n-8n+4=18n-8n+10
4-10=10n+10-10
not sure what to do.

Math 012 - Quidditch, Sunday, February 1, 2009 at 12:05am
Your are on the right track.
You want to get just the variable on one side of the equation. You have done that.
Your last step above:
4 - 10 = 10n + 10 - 10
The +10 and - 10 on the right cancel
4 - 10 = 10n
Subtract 10 from 4 on the left.
Then you something on the left = 10n.
Divide both sides by 10 to find n.

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