- #1
bdh2991
- 103
- 0
Homework Statement
the original problem is in matrix form:
1 1 2 8
-1 -2 -3 1
3 -7 4 10
Homework Equations
The Attempt at a Solution
i got all the way to :
1 1 0 -4
0 1 0 1
0 0 1 2
however, the top row is supposed to = 3 but when i subtract row 2 from row 1 i get -5...i can't find where i messed up in the steps i did it. anyone get the same thing as me or know what i did wrong?