I read it somewhere else and someone give me a challenge question: 3x + 9 = 861, what is the value of x? Anybody know ? Out of curiosity because i do not know the answer to that.

Is this about a captcha/forum signup question or did you miss when you aimed for general off topic? Otherwise yeah it seems to be a standard rearrange to find x equation.

So to work out 'x' (or whatever the unknown value is) you can just pull the numbers to the otherside to it ends up looking like Code: x = 123 So if we have 3x + 9 = 861, we can first MINUS 9, because to take 9 off one side, we must do it to the other, so take 9 away from 861 Now 3x = 852 So to get ride of x, we divide both sides by 3, so 3x / 3 = x and 852 / 3 = 284 so now were just left with x = 284, thus its the answer

I would have some nice equations. Seriously, they're quite fun if you know how to solve them basically.