exam Maths Puzzle Numerical Ability

How do I solve this?

2/x - 1/x+3 = 1/9

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exam Other Question

Simplify: (�7 sqrt11 - sqrt7)(sqrt7 � 10sqrt11) Solve: (2x^2 + 4x)/(x^2+4x-12) + (3x^2-2)/(x^2+2x-24) = (3x^3-4x)/(x^2-x-12)