exam Maths Puzzle Numerical Ability

Evaluate h(-2/3) if h(x) =[[x-2]]

I get [[-2/3-2]]. Is the next step[[ -22/3]] or [[-1-2]]?

Please help

Thanks

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exam Other Question

The variables r and s represent the lengths of the legs of a right triangle, and t represents the length of the hypotenuse. Find the unknown value. Then tell whether the lengths form a Pythagorean triple.

s=16, t=34


6x-7/3=5/6