Answer:
{x,y} = {37/11,-10/11}
Step-by-step explanation:
// Solve equation [2] for the variable y
[2] y = 3x - 11
// Plug this in for variable y in equation [1]
[1] 4x - 5•(3x-11) = 18
[1] -11x = -37
// Solve equation [1] for the variable x
[1] 11x = 37
[1] x = 37/11
// By now we know this much :
x = 37/11
y = 3x-11
// Use the x value to solve for y
y = 3(37/11)-11 = -10/11
Solution :
{x,y} = {37/11,-10/11}
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