Can someone assist me? ^^
P: #1
[-3x + 2y =10]
[-4x +3y =2]

My Answer:

[-3 2]
[4 3]
det= 8-9
det(A)=1

[2 10]
[3 2]
det(B)=4+30
det(B)=34

[-3 10]
[-4 2]
det(C)= -6+40
det(C)=46

x= 34
y=46 (46 isn't an option, so yeah. . .)

P: #2
[x + 2y = -1]
[-x – 3y= -2]

My answer

[x 2]
[-x 3]
det= 2 – 3
det(A)= 1

[2 -1]
[3 -2]
det(B)= 4+3
det(B)= 7

[x -1]
[-x -2]
det(C) = 1 + -2
det(C) = -3

x=7
y= -3
An option, not sure if it's correct.

Question

Can someone assist me? ^^
P: #1
[-3x + 2y =10]
[-4x +3y =2]

My Answer:

[-3   2]
[4   3]
det= 8-9
det(A)=1

[2  10]
[3  2]
det(B)=4+30
det(B)=34


[-3   10]
[-4   2]
det(C)= -6+40
det(C)=46

x= 34
y=46  (46 isn't an option, so yeah. . .)


P: #2
[x + 2y = -1]
[-x – 3y= -2]

My answer 

[x   2]
[-x   3]
det= 2 – 3
det(A)= 1

[2   -1]
[3   -2]
det(B)= 4+3
det(B)= 7

[x   -1]
[-x   -2]
det(C) = 1 + -2
det(C) = -3

x=7
y= -3
An option, not sure if it's correct.

anonymous · Answer

@e.mccormick

anonymous · Answer

@hartnn

kainui · Answer

I think the first determinant is -1, since you have (-3)(3)-(-4)(2) But I am not sure I am distracted sorry.

anonymous · Answer

It's fine, they were both wrong. x3 Not sure I can say thanks for the effort, seeing it was futile in the end since you weren't completely attentive.