Recall: Cramer\\'s rule

Consinder the linear system

ax + by = e

cx + dy = f

which in matrix format is and assume

Then, x and y can be found with cramer\\'s rule as   and

Example:

Solve the equation using Cramer\\'s rule

2x + 7y = 9

5x - 6y = -1

Solve system of equation using the Cramer\\'s rule

Solutions of the system is (1, 1)