So this is negative 12 times negative 12.

This is negative 12 plus negative 12.

Let's go pretty high.

In interval notation, it would be everything between negative 12 and positive 12, and not including those numbers.

They say that he is 7 times as old as Ben.

And then six ways to come from above.

2 goes into 13.

So if you take 12 away from 8, you're at negative 4.

And now we can actually subtract.

So this is going to be a negative 12.

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So, you would say that 9 3 12.

5 plus 7 is 12.

Eleven. Twelve. Thirteen.

ENCOM OS12.

And so how old was William 12 years ago?

Well if twelve boys left the room, then the new ratio of girls to boys would be twelve thirty three, right?

4 times 15 does not work.

16 plus 7.

So, it's 12 plus 16 plus 7.

So let's start with a nice, fairly simple warm up problem.

Well, maybe we want to express it in terms of B.

If he's '4B' right now, 12 years ago it would be 12 less than that.

Midnight?

Midnight.

But I was also first in my radar class... and that was a class of 20.

Useless talent number 12?

Twelve votes.

It's addressed to a Roy Tagliaferro.

And does that make sense?

So let's write that down.

Subtracting 16 is the same thing as adding positive 16.

We're talking about now, today and we're gonna talk about 12 years ago.

But we haven't quite yet made use of the second statement.

Let's subtract '4B' on both sides.

So now we have it in a pretty straightforward form.

1b right there.

Dinner? December 25?

12 pounds, 12 hours.

And I could actually write it like this.

So then we're left with 12 times 5, which is equal to 60.

Well they tell us to do one more.

The first thing that we want to do. We can distribute the 7.

let's figure out what 8 minus 12 is.

FATAL FANTASY VII coming in DECEMBER?