Question

12x - 72 =-5 -12 x - 6y=-24​

Answer 1

Answer:

[1] 30y = -36x + 168

[1] y = -6x/5 + 28/5

// Plug this in for variable y in equation [2]

[2] -12x - 6•(-6x/5+28/5) = -48

[2] -24x/5 = -72/5

[2] -24x = -72

// Solve equation [2] for the variable x

[2] 24x = 72

[2] x = 3

// By now we know this much :

x = 3

y = -6x/5+28/5

// Use the x value to solve for y

y = -(6/5)(3)+28/5 = 2

Solution :

{x,y} = {3,2}