exam Maths Puzzle Numerical Ability

please help to add

(x - 5 / x^2 - 5x - 14) - ( 2x / 7 - x)

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exam Other Question

Find the sum of x for the following set of numbers

2,3,5,6,8,9,11
A Bank loaned out $12,000, part of it at the rate of 8% per year and the rest at the the rate of 18% per year. If the interest recieved totaled $1000, how much was loaned at 8%?