Question

Solve the system of equations (medal, look for system in the comments).

Answer 1

http://assets.openstudy.com/updates/attachments/52e47ce6e4b096fa4059c1c5-yondaime-1390706737887-sys.png

Answer 2

I am not familiar with the idiosyncratic format presented in this problem (not your fault).

I assume, however, that because the problem involves matrices, you understand what matrices are and know at least some basic matrix operations.

Answer 3

ummmmmm put it in matrix format
2 1 line 5
8 4 line 20

Answer 4

Given the system of linear equations presented here,

you could rewrite the system in matrix form:

[X]=[A^(-1)][B]
where A is the system matrix, A^(-1) is the inverse of the system matrix, and B is the column matrix of constants.

Before I say anything further, how much sense does this make to you?

Answer 5

nonsingular matrices have inverses... AA^-1

Answer 6

The system matrix, [A], reads 2 1
8 4

and the column matrix of constants reads 5
20

as UD has already pointed out (above).

Yondaime??

Answer 7

Sorry I was absent.

Answer 8

I understand somewhat.

Answer 9

Could you elaborate on your second comment?

Answer 10

@mathmale