exam Maths Puzzle Numerical Ability

Another problem I'm having troubles with is:
perform the indicated operation and simplify:

1- 2x-1 over x^2-4 over or divided by 1+ 1/x-2

Translation:
1- 2x-1 divided by x

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exam Other Question
solve the inequality. write answer in interval notation.
100 < or equal to 10(5x-2) < or equal to 200




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