book Maths Puzzle Numerical Ability

what's an integer for the expression -(17)?

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book Other Question

Please help me solve this rational equation. I always have a problem on these ones when the denominators are like that.

(8/p+3) + (8/p-3) = -2 1.In the case of finding the value of the determinant how it is related to the set of linear equations?
2. what does it mean (physically) by multiplying the first element of first