exam Maths Puzzle Numerical Ability

How do you subtract this rational expression: 7/x-5 - 2+x/x-5? whats the answer?

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exam Other Question

Please help?

Write an equation in the slope intercept form if possible: For the line which is at (0,-3) and is perpendicular to:
x - 2y = 7
Solve the formula T = 1/4 s x for the variable s choose the correct answer.

The answer I chose was s = T/4x