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Notice that ?y/?x = (3y+2x)/(x+y) is not separable. However, we can solve the equation with the...

Notice that ?y/?x = (3y+2x)/(x+y) is not separable. However, we can solve the equation with the following steps.

a. Define a new variable z=y/x and express ?y/?x in terms of only ? and ?z/?x

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