Question

For the equations with variables x and y, if Dx = 26, Dy = −39 and D = 13 then x = ?

Options

• 2

• − 3

• − 2

• 3

Answer 1

2

Explanation:

Dx = 26, Dy = −39 and D = 13

Using Cramer's rule,

x = `"Dx"/"x" = 26/13 = 2`

x = 2