exam Maths Puzzle Numerical Ability

Can you please tell me if this is figured right?

Simplify: ( x/x^2 � 9 ) � ( x/x^2 + 2x � 15 )

(1 - 9) - (3x - 15)
-8 - - 12
-8 + 12
= 4

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exam Other Question

The area of a rectangle is 24 square meters. Find the length and width of the rectangle if its length is 2 meters greater than its width. Use an equation and the formula � area of a rectangle = (width)(length). In a collection of 16 coins the number of quarters is one-half the number of dimes and the number of nickels is 5 less than twice the number of dimes. How many of each type of coin (quarters, dimes, and nickels) ar ein the collection?