Question

consider this system of equation:
4x+ay= 3
4x+by+3z= 5
5x+cy+4z = 0

and so;
A =
[4 a 0]
[4 b 3]
[5 c 4]

lets say that det(A) = 4. Use Cramer's rule to solve the above system for the variable y.

Answer 1

i will try to help

Answer 2

@TheRealMeeeee thanks

Answer 3

i cant do this one srry

Answer 4

its okay