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

What is the maximum number of the intersection points between a quadrilateral and a triangle (where no sides of the polygons are on the same line)? Solve by substitution. Please help.
8x-4y = 16
y = 2x -4
Thanks in advance.