exam Maths Puzzle Numerical Ability

Solve and check for x.

x/x-2 - x+1/x = 8/x^2-2x

I don't know how to find the LCD. Can you help?

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exam Other Question
Determine if the two equations are parellel, perpendicular or neither

2/5x - 1/3y = 7/8
1/3x - 2/4y = -72

This is not from a book Find the quotient and remainder when x^3 - 2x^2 + 3x - 4 is divided by x-3