exam Maths Puzzle Numerical Ability

v=√(2gE/m),for g

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exam Other Question

The area of the rectangle shown is 2(3x-2)over x-1. Find the width?

The length given is 2x + 6 over 12x -15.

I know area = l x w but how do you find the width when the area is given?
132.48/x=147.12

Can you give me step by step to solve this, i did it with a calculator and got the answer, just forgot how to actually solve.