 So now we go to the third vector math problem here on the back side of your worksheet. And that says c minus a equals, we're going to calculate this answer out. Now our c is 1.7 j hat and our a is 3.0 i hat plus 2.5 j hat. It's important to realize though here that this 1.7 j hat, there's actually an i there but the i is zero. So when I go to write this out, I want to keep in mind that it's zero i hat plus 1.7 j hat. And then I'm subtracting from that the 3.0 i hat plus 2.5 j hat. Once again you group your i's together so it's zero minus 3.0 for the i hat. And then the 1.7 minus the 2.5 for the j hat gives us our y part. And so when you do that math the zero minus 3.0 is going to give you minus 3.0. And the 1.7 minus 2.5 is going to give you minus 0.8 j hat. So that's where you might write out a vector subtraction as a single long line. With the added little thing that I threw in to remind you of how to handle it, if your vector doesn't have i and j listed, the one that's not listed is going to be a zero.