Do you know jmswilson yourself? I am wondering if there is a reason why you want to prevent him/her learning how to problems like this him/her self.To solve 3n + 4 = 12 first subtract 4 from both sides.
3n=8 then divide both sides by 3
n = 8/3
I am wondering if there is a reason why you want to prevent him/her learning how to problems like this him/her self.
Is your teacher aware you're not doing your homework?