exam Maths Puzzle Numerical Ability

Reduce: x^2-3x/x^2-9

Thanks in advance for your help

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exam Other Question

2x(3x - 4y) � 3x(-3x + 4y) Jon spent 1/3 of his study time doing math homework and 2/7 preparing for a history exam. What fraction of his study time remains?

help me please. Would i multiply these to get 2/21? or no?