00:01
The question asks to find the solution of the given system.
00:05
First, we need to change a system of equation into augmenting matrix form.
00:10
So take the coefficient out.
00:35
Remember, we need to find the reduced row echelon form to find the answer.
00:42
So for row 1, we can do 1 over 2 times row 1.
01:08
Copy other rows.
01:32
For row 2, we can do 3 times row 1 minus row 2.
01:36
For row 3, we can do 5 times row 1 minus row 3.
01:45
And for row 4, we can do 3 times row 1 minus row 4.
02:04
Copy row 1.
02:12
Do the elementary row operation for row 2, row 3, and row 4.
02:44
For row 2, we can do 2 over 7 times row 2...