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## Homework Statement

Find the particular solution to the differential equation

(x + y - 4)dx - (3x - y - 4)dy = 0

that satisfies the initial condition y=1 when x=4

## Homework Equations

## The Attempt at a Solution

It's not a homog. or equal D.E., therefore I think it's substitution. I don't really know how to get this problem started.