Finding solution, intersection point, and between two equations.

What is the value of y to make both solutions equal to each other?

x-4=y
4x+2=y

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...quation 1.

x - 4 = y = 4x + 2
x - 4 = 4x + 2

add 4 on both sides

x - 4 + 4 = 4x + 2 + 4

x = ...