SOLUTION: Hi! I have a question about solving systems using inverse matrix. (x) (-2 1) (8) (-10) (y) STEP1 = (3/2 -1/2) (6) STEP2 = ( 9) STEP3 How to

Algebra ->  College  -> Linear Algebra -> SOLUTION: Hi! I have a question about solving systems using inverse matrix. (x) (-2 1) (8) (-10) (y) STEP1 = (3/2 -1/2) (6) STEP2 = ( 9) STEP3 How to       Log On


   

Question 109176: Hi!
I have a question about solving systems using inverse matrix.
(x) (-2 1) (8) (-10)
(y) STEP1 = (3/2 -1/2) (6) STEP2 = ( 9) STEP3
How to get from step 2 to step 3?
Thanks!
Anna

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
If you have the matrix A=%28matrix%282%2C2%2Ca%2Cb%2Cc%2Cd%29%29 and B=%28matrix%282%2C1%2Cd%2Ce%29%29

Then when you multiply A and B, you get





So in this problem, they multiplied the two matrices to get the answer