exam Maths Puzzle Numerical Ability

can you please help me solve and check: (((x-2 over 2 - x+2 over4 = 1 over 2)))

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exam Other Question

this fraction problem has me completely stumped. any help would be greatly appreciated. thanks.

54.

(3xsquared-4) -(x)- (3)
-------------- ---- ------
(2xsquar
4=14=5q

-3s-5=-20