math
posted by kailin .
Solve the following system of equations using matrices
x = 2y + 6
2x + 2y = 16

1 2 6
1 1 8
1st  2nd
1 2 6
0 1 2
1st  2x2nd
1 0 10
0 1 2
so x = 10
y = 2
(using matrices to solve this simple system is like using a sledgehammer to crack a peanut.
Substitution would have been so easy)