exam Maths Puzzle Numerical Ability

help me with this problem: 7/x^2-3x - 3/x = 5/3-x

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exam Other Question

The sum of two Numbers is -2. If twice the smaller number is added to three times the larger, the result is 1. Find the two numbers. Solve the following equations. Construction.A garden area is 30ft long and 20ft wide. A path of uniform width is set around the edge. If the remaining garden is 400ft^2, what is the width of the path?

I am needing some help with this one. Thanks