Why am I getting 3 equations and 2 unknowns when summing moments about point A?

[fayan77]

What does it mean where it says it provides couples on x-axis and z axis?
Anyways what am I doing wrong?
my procedure is finding tension in cables by summing moments about point A. then with the tensions, finding reactions at A. However when i sum the moments about A I get 3 equations 2 unknowns and there is no solution to it.

Thanks in advance

 

[haruspex]

What does it mean where it says it provides couples on x-axis and z axis?

Did you mean to post an image of the text as well as the picture?

Anyways what am I doing wrong?

Cannot tell without seeing your attempt.
Please post it typed into the text area, not as an image.

 

[fayan77]

this was for a quiz in class I'm not about to write everything out again.

 

[haruspex]

this was for a quiz in class I'm not about to write everything out again.

So you'd rather continue being unable to solve this sort of problem?