00:01
In this problem, we're going to solve a one -step equation, solve for the variable a, and we're going to use the multiplication property of equality.
00:11
And we're going to do that by multiplying both sides by four.
00:14
So let's start with our first step.
00:16
We see we have an a divided by four, and we want to undo that division of four.
00:20
So to do that, we do the opposite operation.
00:23
We call this the inverse operation, which is to multiply the side by four.
00:28
Now, we do that because 4, multiplying by 4 and divided by 4, really kind of cancel each other out.
00:35
They are inverses.
00:36
They kind of negate each other.
00:38
And so when they cancel and we just have a left on the left side.
00:43
Now, because of the multiplication property of equality, we have to multiply the other side by 4 too, so that the equation remains true...