If (x, y) is a solution to the system of equations, what is the value of y?

If (x, y) is a solution to the system of equations, what is the value of y?

x + 1/8y = 20

x+1/4y=4

a. 48

b. - 48

c. 128

d. - 128

Y = x + 2 y = 3x - 4

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