00:01
We are asked to solve the following formula for x1.
00:04
If you haven't learned this formula yet, you'll learn it pretty soon.
00:07
It's very helpful for graphs.
00:11
So when we are solving for a variable, we want to think of the acronym pemdos.
00:16
This is the order of operations that a lot of people know.
00:19
It stands for parentheses, exponents, multiply, and divide, add, and subtract.
00:24
And when you are solving, you're going, if you think of it like you're going backwards, so you're trying to reverse solve for a variable.
00:32
So we go reverse through pendos, meaning we'll do that parenthesis on the right side last.
00:41
So to start, we want to add or subtract first...