Question

What is the formula to find the value of y using Cramer’s Rule?

Dy

Answer 1

http://tutorial.math.lamar.edu/Classes/LinAlg/CramersRule.aspx

Answer 2

an example for that

Answer 3

1) 5x+7y= -3.
2x+3y= -1.
The denominator block [which I would call determinant or matrix if the text editor would provide decent graphics] is
5 7
2 3.
Its value is 1. [5*3 - 2*7 = 15 - 14.]
The par column is
-3
-1,
so the x numerator block is
-3 7
-1 3.
Its value is -2. [-9 - (-7).] With a denominator of 1, this also means x = -2.
The y numerator block is
5 -3
2 -1.
Its value and the value of y = 1.