Determinants and Cramer's Rule

$$\frac{-29}{-29}$$

$$\frac{-116}{-29}$$

$$\frac{29}{-29}$$

$$\frac{116}{-29}$$

ad-bc

ab-cd

ad+bc

ab+cd

$$\left|-4\ \ \ -2\right|$$   $$\left|-5\ \ \ -4\right|\$$  

$$\left|-4\ \ \ -16\right|$$   $$\left|-5\ \ -26\right|$$  

$$\left|-16\ \ \ -2\right|$$   $$\left|-26\ \ \ \ -4\right|$$  

$$\left(-5,-2\right)$$

$$\left(-3,-2\right)$$

$$\left(5,1\right)$$

$$9$$

$$-1$$

$$1$$

$$19$$

$$\left(-3,-1\right)$$  

$$\left(-6,6\right)$$  

$$\left(5,-3\right)$$  

$$\left(2,-6\right)$$  

$$\left(1,4\right)$$

$$\left(2,6\right)$$

$$\left(2,-3\right)$$

$$0$$

$$-10$$

$$20$$

$$-20$$

$$-5$$

$$45$$

$$-10$$

$$10$$