exam Maths Puzzle Numerical Ability

I have tried and tried on this problem, would someone please enlighten me?

Section 5.5
Solve and check each of the following equations for x.
48. x/(x-2)-(x+1)/x=8/(x^2-2x)

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exam Other Question

1)What is the area of a rectangle that has a perimenter of 47mm and a lenth of 18.5mm?
2)What is the perimenter of a rectangle that has a area of 400 square meaters and a width of Still need some help. Please see my answer and the teacher comments listed below. Any help you can provided would be greatly appreciate. I have also put the task at the bottom