00:01
So for this question, we want to set up a system of equations.
00:05
And to start with identifying the variables, x, i'll have the shirt, and y is the sweater.
00:13
So i think i'll start with s's x and y.
00:15
It's just easier for me.
00:17
So the first one we know is i've got three shirts and two sweaters.
00:24
That would be $114 .14.
00:29
And then, we're going to get two shirts and four sweaters.
00:34
Then that would cost $164.
00:37
So we don't do this, we want to get one of the variables to cancel out.
00:43
This way to do that would multiply the first formula by 2.
00:48
So we would get 6x plus 4y, 2, 228, and that since we have 4 now, the second equation could stay the same...