exam Maths Puzzle Numerical Ability

solve the following equation
3/z-3 + 5/z-1 = 8/z-2
A) z=-4
B) z=-6
C) z=4
D) z=6

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exam Other Question

I dont have any clue as to what i need to do for this problem.
(x^3*x^4/x^2)^6 27*K = 3^(T+2)
Where: K > 100 and K/T is an integer
Find the smallest integer of K/T

Many Thanks