exam Maths Puzzle Numerical Ability

I really need some help on this one. thank you!

t + (1/t)
_________ = 1

(1/t) - 1

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exam Other Question

Solve by setting up the proper equation to describe the facts given and then carrying out the mathematical calculations to solve for the unknown variable(s).
The sum of two numbers is 36. Their difference is 4. Determine the two unknown numbers. The length of a rectangle is 2cm more tham twice its width. If the perimeter of the rectangle is 52cm find the dimensions of the rectangle