p and q are complex numbers such that p=2/5x+1, q=x+1, and p+q=3x+2. What interval must x fall?

Answer 1

p = (2/5)x + 1

q = x + 1

Add these and get

p + q = (7/5)x + 2

But one of the equations says

p + q = 3x + 2

Then

(7/5)x + 2 = 3x + 2

So x must be zero, unless the equations in the question are typed incorrectly.

x = 0