Problema Solution
Solve the system by using augmented matrix methods. Show your steps (row operations).
-x+y=2
4x+y=17
Answer provided by our tutors
-x+y=2
4x+y=17
-1 1 2
4 1 17
row 2---> row 2 + 4* row 1
-1 1 2
0 5 25
==> 5y=25
y=5
==> x= 3