exam Maths Puzzle Numerical Ability

FOR FUNMATH, please help!! I cannot get the answer that is provided. The answer is (256/16)61/4 = (256^1/4)/16^1/4 = 4/2 = 2.
The problem is Solve 6/ x-3 - 7/x-5 = 1 - 11/x-1.

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exam Other Question
What is the value of k if one root root of (3k+1)x^2=-5 is 1? Please help me :) 6(r plus 2)-4= -10
6(r+2)-4=-10
6r+12-4=-10
6r+6=-10
r+6=-10/6
r=-10/6-6