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**1. Homework Statement**

**2. Homework Equations**

I think it may have to do with inverse matrices or multiplication using the identity matrix

**3. The Attempt at a Solution**

I got the inverse of...

1,-2, 2, 2,-3

3,-5, 6, 2,-4

2,-2, 5,-4, 4

1,-3, 1, 7,-8

3,-4, 7, 0, 2

as...

-6,-14,25,20,-7

2,-13,19,14,-5

4, -2, 1, 0, 0

0, -1, 1, 1, 0

-1, 2 ,-3,-2, 1

and I premultiplied that to...

87, 57, 10,117,-101

208,232,133,330,-146

83,297,235,229, 116

154,-58,-97,112,-245

240,382,278,370, 092

But nothing really seems to make sense. Thanks if you can help!