6 – 07 Adding Landmarks Solution V1

And here’s the answer. Obviously, X1 minus L0 is minus nine because L0 minus X1 is a measurement of plus nine. So let’s add this in. We had one over here on the main diagonal, one. We subtract one off the main diagonal just like before, simple pattern, and then the nine over here goes back to zero, but to nine over here. I hope this makes perfect sense to you.

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