Question

How can the system of equation be represented in a matrix 3x−2y=−25, 5x−2y=−39
?

Answer 1

{x,y}={7,-2}

Explanation:

3x - 2y = 25

-5x + 2y = -39

[2] 2y = 5x - 39

[2] y = 5x/2 - 39/2

// Plug this in for variable y in equation [1]

[1] 3x - 2•(5x/2-39/2) = 25

[1] -2x = -14

// Solve equation [1] for the variable x

[1] 2x = 14

[1] x = 7