book Maths Puzzle Numerical Ability

I need to simplify, can you help?

(3x+9)/(x^2-x-12 * (x^2+5x+6)/(24x+48)

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book Other Question

Find two consecutive odd integers, such that when the smaller is added to twice the larger, the result is 24 more than twice the larger integer. An integer minus 3 times its reciprocal equals 26/3.
What is the integer?